21113032410 has 48 divisors (see below), whose sum is σ = 56232769320. Its totient is φ = 5492820480.

The previous prime is 21113032403. The next prime is 21113032441. The reversal of 21113032410 is 1423031112.

21113032410 is a `hidden beast` number, since 211 + 13 + 0 + 32 + 410 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 18561065121 + 2551967289 = 136239^2 + 50517^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2857155 + ... + 2864534.

Almost surely, 2^21113032410 is an apocalyptic number.

21113032410 is an abundant number, since it is smaller than the sum of its proper divisors (35119736910).

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

21113032410 is a wasteful number, since it uses less digits than its factorization.

21113032410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5721743 (or 5721740 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21113032410 its reverse (1423031112), we get a palindrome (22536063522).

The spelling of 21113032410 in words is "twenty-one billion, one hundred thirteen million, thirty-two thousand, four hundred ten".