12212111222120 has 64 divisors (see below), whose sum is σ = 27585861076800. Its totient is φ = 4865564390400.

The previous prime is 12212111222117. The next prime is 12212111222131. The reversal of 12212111222120 is 2122211121221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12212111222092 and 12212111222101.

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, 13291595 + ... + 14180645.

It is an arithmetic number, because the mean of its divisors is an integer number (431029079325).

Almost surely, 2^{12212111222120} is an apocalyptic number.

12212111222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212111222120 is an abundant number, since it is smaller than the sum of its proper divisors (15373749854680).

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

12212111222120 is a wasteful number, since it uses less digits than its factorization.

12212111222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890418 (or 890414 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12212111222120 its reverse (2122211121221), we get a palindrome (14334322343341).

The spelling of 12212111222120 in words is "twelve trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty".