21112021010120 has 64 divisors (see below), whose sum is σ = 48282163776000. Its totient is φ = 8306915804928.

The previous prime is 21112021010117. The next prime is 21112021010131. The reversal of 21112021010120 is 2101012021112.

It is a super-2 number, since 2×21112021010120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112021010095 and 21112021010104.

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 15 ways as a sum of consecutive naturals, for example, 11568212 + ... + 13268291.

It is an arithmetic number, because the mean of its divisors is an integer number (754408809000).

Almost surely, 2^{21112021010120} is an apocalyptic number.

21112021010120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112021010120 is an abundant number, since it is smaller than the sum of its proper divisors (27170142765880).

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

21112021010120 is a wasteful number, since it uses less digits than its factorization.

21112021010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24836862 (or 24836858 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21112021010120 its reverse (2101012021112), we get a palindrome (23213033031232).

The spelling of 21112021010120 in words is "twenty-one trillion, one hundred twelve billion, twenty-one million, ten thousand, one hundred twenty".