12131101123212 has 24 divisors (see below), whose sum is σ = 28312973905216. Its totient is φ = 4042690190928.

The previous prime is 12131101123181. The next prime is 12131101123283. The reversal of 12131101123212 is 21232110113121.

It is a super-2 number, since 2×12131101123212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126222898 + ... + 126318969.

Almost surely, 2^{12131101123212} is an apocalyptic number.

12131101123212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12131101123212 is an abundant number, since it is smaller than the sum of its proper divisors (16181872782004).

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

12131101123212 is a wasteful number, since it uses less digits than its factorization.

12131101123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252545877 (or 252545875 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 12131101123212 its reverse (21232110113121), we get a palindrome (33363211236333).

The spelling of 12131101123212 in words is "twelve trillion, one hundred thirty-one billion, one hundred one million, one hundred twenty-three thousand, two hundred twelve".