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1222030242020 = 225746118934463
BaseRepresentation
bin10001110010000110101…
…011011011000011100100
311022211021101111100201002
4101302012223123003210
5130010204220221040
62333220513052432
7154201022445620
oct21620653330344
94284241440632
101222030242020
11431295238a85
12178a07557118
138b310797b83
144320a2dc180
1521bc3cdea15
hex11c86adb0e4

1222030242020 has 48 divisors (see below), whose sum is σ = 2939234715648. Its totient is φ = 418072920960.

The previous prime is 1222030241959. The next prime is 1222030242029. The reversal of 1222030242020 is 202420302221.

It is a super-2 number, since 2×12220302420202 (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1222030241983 and 1222030242001.

It is not an unprimeable number, because it can be changed into a prime (1222030242029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9402692 + ... + 9531771.

It is an arithmetic number, because the mean of its divisors is an integer number (61234056576).

Almost surely, 21222030242020 is an apocalyptic number.

1222030242020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222030242020 is an abundant number, since it is smaller than the sum of its proper divisors (1717204473628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222030242020 is a wasteful number, since it uses less digits than its factorization.

1222030242020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18934940 (or 18934938 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 1222030242020 its reverse (202420302221), we get a palindrome (1424450544241).

The spelling of 1222030242020 in words is "one trillion, two hundred twenty-two billion, thirty million, two hundred forty-two thousand, twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 461 922 1844 2305 3227 4610 6454 9220 12908 16135 32270 64540 18934463 37868926 75737852 94672315 132541241 189344630 265082482 378689260 530164964 662706205 1325412410 2650824820 8728787443 17457574886 34915149772 43643937215 61101512101 87287874430 122203024202 174575748860 244406048404 305507560505 611015121010 1222030242020