12122112112120 has 64 divisors (see below), whose sum is σ = 29176872792480. Its totient is φ = 4516571037696.

The previous prime is 12122112112079. The next prime is 12122112112163. The reversal of 12122112112120 is 2121121122121.

It is a happy number.

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, 91823914 + ... + 91955833.

Almost surely, 2^{12122112112120} is an apocalyptic number.

12122112112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12122112112120 is an abundant number, since it is smaller than the sum of its proper divisors (17054760680360).

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

12122112112120 is a wasteful number, since it uses less digits than its factorization.

12122112112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183779872 (or 183779868 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 12122112112120 its reverse (2121121122121), we get a palindrome (14243233234241).

It can be divided in two parts, 1212211 and 2112120, that added together give a triangular number (3324331 = T₂₅₇₈).

The spelling of 12122112112120 in words is "twelve trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twelve thousand, one hundred twenty".