11231516212 has 12 divisors (see below), whose sum is σ = 22463032480. Its totient is φ = 4813506936.

The previous prime is 11231516183. The next prime is 11231516213. The reversal of 11231516212 is 21261513211.

11231516212 is an admirable number.

It is a super-2 number, since 2×11231516212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231516213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200562762 + ... + 200562817.

Almost surely, 2^11231516212 is an apocalyptic number.

It is an amenable number.

11231516212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11231516212 is a wasteful number, since it uses less digits than its factorization.

11231516212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401125590 (or 401125588 counting only the distinct ones).

The product of its digits is 720, while the sum is 25.

The spelling of 11231516212 in words is "eleven billion, two hundred thirty-one million, five hundred sixteen thousand, two hundred twelve".