12102313212 has 36 divisors (see below), whose sum is σ = 33373046616. Its totient is φ = 3667367520.

The previous prime is 12102313199. The next prime is 12102313219. The reversal of 12102313212 is 21231320121.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102313219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15280303 + ... + 15281094.

Almost surely, 2^12102313212 is an apocalyptic number.

12102313212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12102313212 is an abundant number, since it is smaller than the sum of its proper divisors (21270733404).

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

12102313212 is a wasteful number, since it uses less digits than its factorization.

12102313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30561418 (or 30561413 counting only the distinct ones).

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

Adding to 12102313212 its reverse (21231320121), we get a palindrome (33333633333).

The spelling of 12102313212 in words is "twelve billion, one hundred two million, three hundred thirteen thousand, two hundred twelve".