12312142443100 has 36 divisors (see below), whose sum is σ = 26717735292304. Its totient is φ = 4924785790080.

The previous prime is 12312142443077. The next prime is 12312142443119. The reversal of 12312142443100 is 134424121321.

It is a happy number.

It is a super-2 number, since 2×12312142443100² (a number of 27 digits) contains 22 as substring.

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, 6356512 + ... + 8064088.

Almost surely, 2^{12312142443100} is an apocalyptic number.

12312142443100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312142443100 is an abundant number, since it is smaller than the sum of its proper divisors (14405592849204).

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

12312142443100 is a wasteful number, since it uses less digits than its factorization.

12312142443100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779694 (or 1779687 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 12312142443100 its reverse (134424121321), we get a palindrome (12446566564421).

The spelling of 12312142443100 in words is "twelve trillion, three hundred twelve billion, one hundred forty-two million, four hundred forty-three thousand, one hundred".