21113044110 has 24 divisors (see below), whose sum is σ = 54893914920. Its totient is φ = 5630145072.

The previous prime is 21113044091. The next prime is 21113044111. The reversal of 21113044110 is 1144031112.

21113044110 is a `hidden beast` number, since 211 + 1 + 3 + 0 + 441 + 10 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113044111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117294600 + ... + 117294779.

It is an arithmetic number, because the mean of its divisors is an integer number (2287246455).

Almost surely, 2^21113044110 is an apocalyptic number.

21113044110 is an abundant number, since it is smaller than the sum of its proper divisors (33780870810).

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

21113044110 is a wasteful number, since it uses less digits than its factorization.

21113044110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234589392 (or 234589389 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21113044110 its reverse (1144031112), we get a palindrome (22257075222).

The spelling of 21113044110 in words is "twenty-one billion, one hundred thirteen million, forty-four thousand, one hundred ten".