21132120032 has 24 divisors (see below), whose sum is σ = 41619686976. Its totient is φ = 10562040832.

The previous prime is 21132120013. The next prime is 21132120073. The reversal of 21132120032 is 23002123112.

It is a super-3 number, since 3×21132120032³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39248 + ... + 209295.

It is an arithmetic number, because the mean of its divisors is an integer number (1734153624).

Almost surely, 2^21132120032 is an apocalyptic number.

It is an amenable number.

21132120032 is a deficient number, since it is larger than the sum of its proper divisors (20487566944).

21132120032 is a wasteful number, since it uses less digits than its factorization.

21132120032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251210 (or 251202 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21132120032 its reverse (23002123112), we get a palindrome (44134243144).

The spelling of 21132120032 in words is "twenty-one billion, one hundred thirty-two million, one hundred twenty thousand, thirty-two".