12120100111220 has 48 divisors (see below), whose sum is σ = 25466919609600. Its totient is φ = 4845239030016.

The previous prime is 12120100111201. The next prime is 12120100111243. The reversal of 12120100111220 is 2211100102121.

It is a junction number, because it is equal to n+sod(n) for n = 12120100111195 and 12120100111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304512881 + ... + 304552679.

It is an arithmetic number, because the mean of its divisors is an integer number (530560825200).

Almost surely, 2^{12120100111220} is an apocalyptic number.

12120100111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12120100111220 is an abundant number, since it is smaller than the sum of its proper divisors (13346819498380).

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

12120100111220 is a wasteful number, since it uses less digits than its factorization.

12120100111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48224 (or 48222 counting only the distinct ones).

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

Adding to 12120100111220 its reverse (2211100102121), we get a palindrome (14331200213341).

Subtracting from 12120100111220 its reverse (2211100102121), we obtain a palindrome (9909000009099).

The spelling of 12120100111220 in words is "twelve trillion, one hundred twenty billion, one hundred million, one hundred eleven thousand, two hundred twenty".