21210022331020 has 24 divisors (see below), whose sum is σ = 46076945065200. Its totient is φ = 8191456900032.

The previous prime is 21210022330967. The next prime is 21210022331039. The reversal of 21210022331020 is 2013322001212.

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, 18284501430 + ... + 18284502589.

It is an arithmetic number, because the mean of its divisors is an integer number (1919872711050).

Almost surely, 2^{21210022331020} is an apocalyptic number.

21210022331020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210022331020 is an abundant number, since it is smaller than the sum of its proper divisors (24866922734180).

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

21210022331020 is a wasteful number, since it uses less digits than its factorization.

21210022331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36569004057 (or 36569004055 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21210022331020 its reverse (2013322001212), we get a palindrome (23223344332232).

The spelling of 21210022331020 in words is "twenty-one trillion, two hundred ten billion, twenty-two million, three hundred thirty-one thousand, twenty".