123212220303204 has 36 divisors (see below), whose sum is σ = 311462304822396. Its totient is φ = 41069527917888.

The previous prime is 123212220303197. The next prime is 123212220303229. The reversal of 123212220303204 is 402303022212321.

123212220303204 is a `hidden beast` number, since 1 + 2 + 32 + 122 + 2 + 0 + 303 + 204 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 54155322540900 + 69056897762304 = 7359030^2 + 8310048^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 49270539 + ... + 51710834.

It is an arithmetic number, because the mean of its divisors is an integer number (8651730689511).

Almost surely, 2^{123212220303204} is an apocalyptic number.

It is an amenable number.

123212220303204 is an abundant number, since it is smaller than the sum of its proper divisors (188250084519192).

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

123212220303204 is a wasteful number, since it uses less digits than its factorization.

123212220303204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101015276 (or 101015271 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 123212220303204 its reverse (402303022212321), we get a palindrome (525515242515525).

The spelling of 123212220303204 in words is "one hundred twenty-three trillion, two hundred twelve billion, two hundred twenty million, three hundred three thousand, two hundred four".