12312101220000 has 120 divisors (see below), whose sum is σ = 40386154618656. Its totient is φ = 3283226976000.

The previous prime is 12312101219993. The next prime is 12312101220017. The reversal of 12312101220000 is 2210121321.

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 (15).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102540844 + ... + 102660843.

Almost surely, 2^{12312101220000} is an apocalyptic number.

12312101220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312101220000 is an abundant number, since it is smaller than the sum of its proper divisors (28074053398656).

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

12312101220000 is an equidigital number, since it uses as much as digits as its factorization.

12312101220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205201720 (or 205201697 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12312101220000 its reverse (2210121321), we get a palindrome (12314311341321).

The spelling of 12312101220000 in words is "twelve trillion, three hundred twelve billion, one hundred one million, two hundred twenty thousand".