12312001200 has 120 divisors (see below), whose sum is σ = 41154294528. Its totient is φ = 3140445440.

The previous prime is 12312001181. The next prime is 12312001211. The reversal of 12312001200 is 210021321.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195444 + ... + 250643.

Almost surely, 2^12312001200 is an apocalyptic number.

12312001200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312001200 is an abundant number, since it is smaller than the sum of its proper divisors (28842293328).

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

12312001200 is a wasteful number, since it uses less digits than its factorization.

12312001200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446131 (or 446120 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12312001200 its reverse (210021321), we get a palindrome (12522022521).

The spelling of 12312001200 in words is "twelve billion, three hundred twelve million, one thousand, two hundred".