12312211311020 has 12 divisors (see below), whose sum is σ = 25855643753184. Its totient is φ = 4924884524400.

The previous prime is 12312211311007. The next prime is 12312211311047. The reversal of 12312211311020 is 2011311221321.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 615610565551 = 12312211311020 / (1 + 2 + 3 + 1 + 2 + 2 + 1 + 1 + 3 + 1 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12312211310983 and 12312211311001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307805282756 + ... + 307805282795.

It is an arithmetic number, because the mean of its divisors is an integer number (2154636979432).

Almost surely, 2^{12312211311020} is an apocalyptic number.

12312211311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312211311020 is an abundant number, since it is smaller than the sum of its proper divisors (13543432442164).

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

12312211311020 is a wasteful number, since it uses less digits than its factorization.

12312211311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615610565560 (or 615610565558 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 12312211311020 its reverse (2011311221321), we get a palindrome (14323522532341).

The spelling of 12312211311020 in words is "twelve trillion, three hundred twelve billion, two hundred eleven million, three hundred eleven thousand, twenty".