21033001132 has 72 divisors (see below), whose sum is σ = 43568183232. Its totient is φ = 8807198400.

The previous prime is 21033001109. The next prime is 21033001147. The reversal of 21033001132 is 23110033012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4064907 + ... + 4070077.

It is an arithmetic number, because the mean of its divisors is an integer number (605113656).

Almost surely, 2^21033001132 is an apocalyptic number.

21033001132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21033001132 is an abundant number, since it is smaller than the sum of its proper divisors (22535182100).

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

21033001132 is a wasteful number, since it uses less digits than its factorization.

21033001132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5759 (or 5744 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21033001132 its reverse (23110033012), we get a palindrome (44143034144).

The spelling of 21033001132 in words is "twenty-one billion, thirty-three million, one thousand, one hundred thirty-two".