10521491922 has 30 divisors (see below), whose sum is σ = 23578861383. Its totient is φ = 3506728788.

The previous prime is 10521491881. The next prime is 10521491951. The reversal of 10521491922 is 22919412501.

10521491922 is a `hidden beast` number, since 1 + 0 + 521 + 49 + 1 + 92 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5260745961 + 5260745961 = 72531^2 + 72531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=72531.

It is a super-2 number, since 2×10521491922² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1301529 + ... + 1309587.

Almost surely, 2^10521491922 is an apocalyptic number.

10521491922 is an abundant number, since it is smaller than the sum of its proper divisors (13057369461).

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

10521491922 is an frugal number, since it uses more digits than its factorization.

10521491922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16132 (or 8064 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

It can be divided in two parts, 105214 and 91922, that added together give a square (197136 = 444²).

The spelling of 10521491922 in words is "ten billion, five hundred twenty-one million, four hundred ninety-one thousand, nine hundred twenty-two".