12111000312 has 16 divisors (see below), whose sum is σ = 30277500840. Its totient is φ = 4037000096.

The previous prime is 12111000287. The next prime is 12111000331. The reversal of 12111000312 is 21300011121.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 252312483 + ... + 252312530.

Almost surely, 2^12111000312 is an apocalyptic number.

12111000312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12111000312 is an abundant number, since it is smaller than the sum of its proper divisors (18166500528).

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

12111000312 is a wasteful number, since it uses less digits than its factorization.

12111000312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504625022 (or 504625018 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 12111000312 its reverse (21300011121), we get a palindrome (33411011433).

The spelling of 12111000312 in words is "twelve billion, one hundred eleven million, three hundred twelve", and thus it is an aban number.