21020212032 has 56 divisors (see below), whose sum is σ = 55682692800. Its totient is φ = 6998332416.

The previous prime is 21020212021. The next prime is 21020212093. The reversal of 21020212032 is 23021202012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95844 + ... + 226332.

It is an arithmetic number, because the mean of its divisors is an integer number (994333800).

Almost surely, 2^21020212032 is an apocalyptic number.

It is an amenable number.

21020212032 is an abundant number, since it is smaller than the sum of its proper divisors (34662480768).

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

21020212032 is a wasteful number, since it uses less digits than its factorization.

21020212032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131343 (or 131333 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21020212032 its reverse (23021202012), we get a palindrome (44041414044).

The spelling of 21020212032 in words is "twenty-one billion, twenty million, two hundred twelve thousand, thirty-two".