2113121223212 has 24 divisors (see below), whose sum is σ = 3708983287296. Its totient is φ = 1053415451088.

The previous prime is 2113121223181. The next prime is 2113121223221. The reversal of 2113121223212 is 2123221213112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1798523 + ... + 2731469.

It is an arithmetic number, because the mean of its divisors is an integer number (154540970304).

Almost surely, 2^{2113121223212} is an apocalyptic number.

It is an amenable number.

2113121223212 is a deficient number, since it is larger than the sum of its proper divisors (1595862064084).

2113121223212 is a wasteful number, since it uses less digits than its factorization.

2113121223212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934637 (or 934635 counting only the distinct ones).

The product of its digits is 576, while the sum is 23.

Adding to 2113121223212 its reverse (2123221213112), we get a palindrome (4236342436324).

The spelling of 2113121223212 in words is "two trillion, one hundred thirteen billion, one hundred twenty-one million, two hundred twenty-three thousand, two hundred twelve".