20312211221302 has 128 divisors (see below), whose sum is σ = 42762682368000. Its totient is φ = 6979954550400.

The previous prime is 20312211221293. The next prime is 20312211221399.

20312211221302 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2831449 + ... + 6974347.

It is an arithmetic number, because the mean of its divisors is an integer number (334083456000).

Almost surely, 2^{20312211221302} is an apocalyptic number.

20312211221302 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20312211221302 is an abundant number, since it is smaller than the sum of its proper divisors (22450471146698).

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

20312211221302 is a wasteful number, since it uses less digits than its factorization.

20312211221302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143042.

The product of its (nonzero) digits is 576, while the sum is 22.

Multiplying 20312211221302 by its sum of digits (22), we get a palindrome (446868646868644).

It can be divided in two parts, 2031221 and 1221302, that added together give a palindrome (3252523).

The spelling of 20312211221302 in words is "twenty trillion, three hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, three hundred two".