123221311330020 has 24 divisors (see below), whose sum is σ = 345019671724224. Its totient is φ = 32859016354656.

The previous prime is 123221311330001. The next prime is 123221311330067. The reversal of 123221311330020 is 20033113122321.

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 7 ways as a sum of consecutive naturals, for example, 1026844261024 + ... + 1026844261143.

It is an arithmetic number, because the mean of its divisors is an integer number (14375819655176).

Almost surely, 2^{123221311330020} is an apocalyptic number.

123221311330020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123221311330020 is an abundant number, since it is smaller than the sum of its proper divisors (221798360394204).

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

123221311330020 is a wasteful number, since it uses less digits than its factorization.

123221311330020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053688522179 (or 2053688522177 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 123221311330020 its reverse (20033113122321), we get a palindrome (143254424452341).

The spelling of 123221311330020 in words is "one hundred twenty-three trillion, two hundred twenty-one billion, three hundred eleven million, three hundred thirty thousand, twenty".