21152825112 has 64 divisors (see below), whose sum is σ = 54849276000. Its totient is φ = 6792422400.

The previous prime is 21152825101. The next prime is 21152825119.

21152825112 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 21152825112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152825119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28237 + ... + 207612.

Almost surely, 2^21152825112 is an apocalyptic number.

It is an amenable number.

21152825112 is an abundant number, since it is smaller than the sum of its proper divisors (33696450888).

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

21152825112 is a wasteful number, since it uses less digits than its factorization.

21152825112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235996 (or 235992 counting only the distinct ones).

The product of its digits is 3200, while the sum is 30.

The spelling of 21152825112 in words is "twenty-one billion, one hundred fifty-two million, eight hundred twenty-five thousand, one hundred twelve".