23111312212 has 12 divisors (see below), whose sum is σ = 40450656960. Its totient is φ = 11553981656.

The previous prime is 23111312179. The next prime is 23111312221. The reversal of 23111312212 is 21221311132.

It is a self number, because there is not a number n which added to its sum of digits gives 23111312212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387298 + ... + 442969.

It is an arithmetic number, because the mean of its divisors is an integer number (3370888080).

Almost surely, 2^23111312212 is an apocalyptic number.

It is an amenable number.

23111312212 is a deficient number, since it is larger than the sum of its proper divisors (17339344748).

23111312212 is a wasteful number, since it uses less digits than its factorization.

23111312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837230 (or 837228 counting only the distinct ones).

The product of its digits is 144, while the sum is 19.

Adding to 23111312212 its reverse (21221311132), we get a palindrome (44332623344).

The spelling of 23111312212 in words is "twenty-three billion, one hundred eleven million, three hundred twelve thousand, two hundred twelve".