21232333020 has 48 divisors (see below), whose sum is σ = 59457652128. Its totient is φ = 5661277440.

The previous prime is 21232332997. The next prime is 21232333099. The reversal of 21232333020 is 2033323212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670750 + ... + 701690.

It is an arithmetic number, because the mean of its divisors is an integer number (1238701086).

Almost surely, 2^21232333020 is an apocalyptic number.

21232333020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21232333020 is an abundant number, since it is smaller than the sum of its proper divisors (38225319108).

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

21232333020 is a wasteful number, since it uses less digits than its factorization.

21232333020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42390 (or 42388 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 21232333020 its reverse (2033323212), we get a palindrome (23265656232).

The spelling of 21232333020 in words is "twenty-one billion, two hundred thirty-two million, three hundred thirty-three thousand, twenty".