23211222112 has 48 divisors (see below), whose sum is σ = 49445674992. Its totient is φ = 10662059520.

The previous prime is 23211222071. The next prime is 23211222137. The reversal of 23211222112 is 21122211232.

It is a self number, because there is not a number n which added to its sum of digits gives 23211222112.

It is a congruent number.

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, 44443 + ... + 219994.

It is an arithmetic number, because the mean of its divisors is an integer number (1030118229).

Almost surely, 2^23211222112 is an apocalyptic number.

It is an amenable number.

23211222112 is an abundant number, since it is smaller than the sum of its proper divisors (26234452880).

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

23211222112 is a wasteful number, since it uses less digits than its factorization.

23211222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264671 (or 264663 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

Adding to 23211222112 its reverse (21122211232), we get a palindrome (44333433344).

The spelling of 23211222112 in words is "twenty-three billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twelve".