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22010222120 = 235641858433
BaseRepresentation
bin10100011111111010…
…010101011000101000
32002210221010010120212
4110133322111120220
5330034104101440
614040015240252
71406301541535
oct243772253050
962727103525
1022010222120
119375218717
124323219088
1320c9cc0993
1410cb281d8c
1588c49c465
hex51fe95628

22010222120 has 32 divisors (see below), whose sum is σ = 49600316520. Its totient is φ = 8790343680.

The previous prime is 22010222107. The next prime is 22010222123. The reversal of 22010222120 is 2122201022.

It can be written as a sum of positive squares in 4 ways, for example, as 21832426564 + 177795556 = 147758^2 + 13334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22010222095 and 22010222104.

It is not an unprimeable number, because it can be changed into a prime (22010222123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403577 + ... + 454856.

Almost surely, 222010222120 is an apocalyptic number.

22010222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22010222120 is an abundant number, since it is smaller than the sum of its proper divisors (27590094400).

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

22010222120 is a wasteful number, since it uses less digits than its factorization.

22010222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859085 (or 859081 counting only the distinct ones).

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

Adding to 22010222120 its reverse (2122201022), we get a palindrome (24132423142).

The spelling of 22010222120 in words is "twenty-two billion, ten million, two hundred twenty-two thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 641 1282 2564 3205 5128 6410 12820 25640 858433 1716866 3433732 4292165 6867464 8584330 17168660 34337320 550255553 1100511106 2201022212 2751277765 4402044424 5502555530 11005111060 22010222120