21213232003020 has 48 divisors (see below), whose sum is σ = 59516081856000. Its totient is φ = 5645525462976.

The previous prime is 21213232002979. The next prime is 21213232003063. The reversal of 21213232003020 is 2030023231212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 354232452 + ... + 354292331.

It is an arithmetic number, because the mean of its divisors is an integer number (1239918372000).

Almost surely, 2^{21213232003020} is an apocalyptic number.

21213232003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21213232003020 is an abundant number, since it is smaller than the sum of its proper divisors (38302849852980).

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

21213232003020 is a wasteful number, since it uses less digits than its factorization.

21213232003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708525294 (or 708525292 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21213232003020 its reverse (2030023231212), we get a palindrome (23243255234232).

The spelling of 21213232003020 in words is "twenty-one trillion, two hundred thirteen billion, two hundred thirty-two million, three thousand, twenty".