21120133310232 has 64 divisors (see below), whose sum is σ = 57701594851200. Its totient is φ = 6388792477440.

The previous prime is 21120133310231. The next prime is 21120133310251. The reversal of 21120133310232 is 23201333102112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120133310231) 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, 70148998 + ... + 70449429.

It is an arithmetic number, because the mean of its divisors is an integer number (901587419550).

Almost surely, 2^{21120133310232} is an apocalyptic number.

21120133310232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21120133310232 is an abundant number, since it is smaller than the sum of its proper divisors (36581461540968).

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

21120133310232 is a wasteful number, since it uses less digits than its factorization.

21120133310232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140599016 (or 140599012 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21120133310232 its reverse (23201333102112), we get a palindrome (44321466412344).

It can be divided in two parts, 2112013 and 3310232, that added together give a palindrome (5422245).

The spelling of 21120133310232 in words is "twenty-one trillion, one hundred twenty billion, one hundred thirty-three million, three hundred ten thousand, two hundred thirty-two".