21132034044 has 24 divisors (see below), whose sum is σ = 53790632448. Its totient is φ = 6403646640.

The previous prime is 21132034043. The next prime is 21132034067. The reversal of 21132034044 is 44043023112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132034043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80045452 + ... + 80045715.

It is an arithmetic number, because the mean of its divisors is an integer number (2241276352).

Almost surely, 2^21132034044 is an apocalyptic number.

It is an amenable number.

21132034044 is an abundant number, since it is smaller than the sum of its proper divisors (32658598404).

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

21132034044 is a wasteful number, since it uses less digits than its factorization.

21132034044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160091185 (or 160091183 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21132034044 its reverse (44043023112), we get a palindrome (65175057156).

The spelling of 21132034044 in words is "twenty-one billion, one hundred thirty-two million, thirty-four thousand, forty-four".