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12202120220 = 2251181351647
BaseRepresentation
bin10110101110100110…
…11001010000011100
31011111101102221011112
423113103121100130
5144442220321340
65334445441152
7611244211343
oct132723312034
934441387145
1012202120220
1151a1862584
1224465701b8
1311c5cb1ba4
1483a7d2b5a
154b6398065
hex2d74d941c

12202120220 has 24 divisors (see below), whose sum is σ = 25627117824. Its totient is φ = 4880340416.

The previous prime is 12202120201. The next prime is 12202120237. The reversal of 12202120220 is 2202120221.

12202120220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12202120195 and 12202120204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210437 + ... + 262083.

It is an arithmetic number, because the mean of its divisors is an integer number (1067796576).

Almost surely, 212202120220 is an apocalyptic number.

12202120220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12202120220 is an abundant number, since it is smaller than the sum of its proper divisors (13424997604).

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

12202120220 is a wasteful number, since it uses less digits than its factorization.

12202120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63469 (or 63467 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12202120220 its reverse (2202120221), we get a palindrome (14404240441).

Subtracting from 12202120220 its reverse (2202120221), we obtain a palindrome (9999999999).

It can be divided in two parts, 122021 and 20220, that added together give a palindrome (142241).

The spelling of 12202120220 in words is "twelve billion, two hundred two million, one hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 11813 23626 47252 51647 59065 103294 118130 206588 236260 258235 516470 1032940 610106011 1220212022 2440424044 3050530055 6101060110 12202120220