10521157122 has 64 divisors (see below), whose sum is σ = 27882178560. Its totient is φ = 2875344912.

The previous prime is 10521157121. The next prime is 10521157151. The reversal of 10521157122 is 22175112501.

10521157122 is a `hidden beast` number, since 1 + 0 + 521 + 15 + 7 + 122 = 666.

It is a super-2 number, since 2×10521157122² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10521157121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 596388 + ... + 613775.

It is an arithmetic number, because the mean of its divisors is an integer number (435659040).

Almost surely, 2^10521157122 is an apocalyptic number.

10521157122 is an abundant number, since it is smaller than the sum of its proper divisors (17361021438).

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

10521157122 is a wasteful number, since it uses less digits than its factorization.

10521157122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210204 (or 1210198 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 27.

Adding to 10521157122 its reverse (22175112501), we get a palindrome (32696269623).

The spelling of 10521157122 in words is "ten billion, five hundred twenty-one million, one hundred fifty-seven thousand, one hundred twenty-two".