21010022021120 has 96 divisors (see below), whose sum is σ = 54994628248560. Its totient is φ = 7640007966720.

The previous prime is 21010022021113. The next prime is 21010022021173. The reversal of 21010022021120 is 2112022001012.

It is a junction number, because it is equal to n+sod(n) for n = 21010022021095 and 21010022021104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93149177 + ... + 93374456.

Almost surely, 2^{21010022021120} is an apocalyptic number.

21010022021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010022021120 is an abundant number, since it is smaller than the sum of its proper divisors (33984606227440).

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

21010022021120 is a wasteful number, since it uses less digits than its factorization.

21010022021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186523671 (or 186523651 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010022021120 its reverse (2112022001012), we get a palindrome (23122044022132).

The spelling of 21010022021120 in words is "twenty-one trillion, ten billion, twenty-two million, twenty-one thousand, one hundred twenty".