10012120111220 has 12 divisors (see below), whose sum is σ = 21025452233604. Its totient is φ = 4004848044480.

The previous prime is 10012120111211. The next prime is 10012120111261. The reversal of 10012120111220 is 2211102121001.

It can be written as a sum of positive squares in 2 ways, for example, as 2300457759076 + 7711662352144 = 1516726^2 + 2776988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10012120111195 and 10012120111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250303002761 + ... + 250303002800.

It is an arithmetic number, because the mean of its divisors is an integer number (1752121019467).

Almost surely, 2^{10012120111220} is an apocalyptic number.

10012120111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10012120111220 is an abundant number, since it is smaller than the sum of its proper divisors (11013332122384).

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

10012120111220 is a wasteful number, since it uses less digits than its factorization.

10012120111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500606005570 (or 500606005568 counting only the distinct ones).

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

Adding to 10012120111220 its reverse (2211102121001), we get a palindrome (12223222232221).

The spelling of 10012120111220 in words is "ten trillion, twelve billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".