12102312312 has 48 divisors (see below), whose sum is σ = 32973398640. Its totient is φ = 4009943808.

The previous prime is 12102312269. The next prime is 12102312337. The reversal of 12102312312 is 21321320121.

12102312312 is a `hidden beast` number, since 121 + 0 + 231 + 2 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 491233 + ... + 515280.

It is an arithmetic number, because the mean of its divisors is an integer number (686945805).

Almost surely, 2^12102312312 is an apocalyptic number.

12102312312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102312312 is an abundant number, since it is smaller than the sum of its proper divisors (20871086328).

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

12102312312 is a wasteful number, since it uses less digits than its factorization.

12102312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006692 (or 1006685 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12102312312 its reverse (21321320121), we get a palindrome (33423632433).

The spelling of 12102312312 in words is "twelve billion, one hundred two million, three hundred twelve thousand, three hundred twelve".