21002022333100 has 72 divisors (see below), whose sum is σ = 45756446400000. Its totient is φ = 8367315028800.

The previous prime is 21002022333067. The next prime is 21002022333133. The reversal of 21002022333100 is 133322020012.

It is an interprime number because it is at equal distance from previous prime (21002022333067) and next prime (21002022333133).

It is a super-2 number, since 2×21002022333100² (a number of 27 digits) contains 22 as substring.

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, 25410151 + ... + 26223649.

It is an arithmetic number, because the mean of its divisors is an integer number (635506200000).

Almost surely, 2^{21002022333100} is an apocalyptic number.

21002022333100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21002022333100 is an abundant number, since it is smaller than the sum of its proper divisors (24754424066900).

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

21002022333100 is a wasteful number, since it uses less digits than its factorization.

21002022333100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814543 (or 814536 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21002022333100 its reverse (133322020012), we get a palindrome (21135344353112).

The spelling of 21002022333100 in words is "twenty-one trillion, two billion, twenty-two million, three hundred thirty-three thousand, one hundred".