21112020110120 has 32 divisors (see below), whose sum is σ = 47945989605600. Its totient is φ = 8365884602688.

The previous prime is 21112020110117. The next prime is 21112020110123. The reversal of 21112020110120 is 2101102021112.

It is an interprime number because it is at equal distance from previous prime (21112020110117) and next prime (21112020110123).

It is a super-2 number, since 2×21112020110120² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21112020110095 and 21112020110104.

It is not an unprimeable number, because it can be changed into a prime (21112020110123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2466353210 + ... + 2466361769.

It is an arithmetic number, because the mean of its divisors is an integer number (1498312175175).

Almost surely, 2^{21112020110120} is an apocalyptic number.

21112020110120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112020110120 is an abundant number, since it is smaller than the sum of its proper divisors (26833969495480).

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

21112020110120 is a wasteful number, since it uses less digits than its factorization.

21112020110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932715097 (or 4932715093 counting only the distinct ones).

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

Adding to 21112020110120 its reverse (2101102021112), we get a palindrome (23213122131232).

The spelling of 21112020110120 in words is "twenty-one trillion, one hundred twelve billion, twenty million, one hundred ten thousand, one hundred twenty".