2112120211220 has 48 divisors (see below), whose sum is σ = 4520301085440. Its totient is φ = 828694628736.

The previous prime is 2112120211189. The next prime is 2112120211237. The reversal of 2112120211220 is 221120212112.

It is a super-2 number, since 2×2112120211220² (a number of 25 digits) contains 22 as substring.

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, 3904421 + ... + 4412339.

It is an arithmetic number, because the mean of its divisors is an integer number (94172939280).

Almost surely, 2^{2112120211220} is an apocalyptic number.

2112120211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112120211220 is an abundant number, since it is smaller than the sum of its proper divisors (2408180874220).

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

2112120211220 is a wasteful number, since it uses less digits than its factorization.

2112120211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511904 (or 511902 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2112120211220 its reverse (221120212112), we get a palindrome (2333240423332).

The spelling of 2112120211220 in words is "two trillion, one hundred twelve billion, one hundred twenty million, two hundred eleven thousand, two hundred twenty".