21120132110 has 32 divisors (see below), whose sum is σ = 47396869632. Its totient is φ = 6582898080.

The previous prime is 21120132107. The next prime is 21120132113. The reversal of 21120132110 is 1123102112.

It is an interprime number because it is at equal distance from previous prime (21120132107) and next prime (21120132113).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120132113) 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, 13713602 + ... + 13715141.

It is an arithmetic number, because the mean of its divisors is an integer number (1481152176).

Almost surely, 2^21120132110 is an apocalyptic number.

21120132110 is an abundant number, since it is smaller than the sum of its proper divisors (26276737522).

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

21120132110 is a wasteful number, since it uses less digits than its factorization.

21120132110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27428768.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21120132110 its reverse (1123102112), we get a palindrome (22243234222).

The spelling of 21120132110 in words is "twenty-one billion, one hundred twenty million, one hundred thirty-two thousand, one hundred ten".