123212220303232 has 128 divisors (see below), whose sum is σ = 261646762386240. Its totient is φ = 57593664995328.

The previous prime is 123212220303229. The next prime is 123212220303247. The reversal of 123212220303232 is 232303022212321.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 123212220303232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262541493 + ... + 263010379.

Almost surely, 2^{123212220303232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123212220303232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130823381193120).

123212220303232 is an abundant number, since it is smaller than the sum of its proper divisors (138434542083008).

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

123212220303232 is a wasteful number, since it uses less digits than its factorization.

123212220303232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469728 (or 469716 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 123212220303232 its reverse (232303022212321), we get a palindrome (355515242515553).

The spelling of 123212220303232 in words is "one hundred twenty-three trillion, two hundred twelve billion, two hundred twenty million, three hundred three thousand, two hundred thirty-two".