12312003022000 has 160 divisors (see below), whose sum is σ = 32495796260928. Its totient is φ = 4474476800000.

The previous prime is 12312003021971. The next prime is 12312003022003. The reversal of 12312003022000 is 22030021321.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (12312003022003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37699410 + ... + 38024590.

Almost surely, 2^{12312003022000} is an apocalyptic number.

12312003022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12312003022000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16247898130464).

12312003022000 is an abundant number, since it is smaller than the sum of its proper divisors (20183793238928).

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

12312003022000 is a wasteful number, since it uses less digits than its factorization.

12312003022000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326936 (or 326920 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 12312003022000 its reverse (22030021321), we get a palindrome (12334033043321).

The spelling of 12312003022000 in words is "twelve trillion, three hundred twelve billion, three million, twenty-two thousand".