123221425212 has 18 divisors (see below), whose sum is σ = 311476380488. Its totient is φ = 41073808392.

The previous prime is 123221425199. The next prime is 123221425213. The reversal of 123221425212 is 212524122321.

123221425212 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 21 + 425 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123221425213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1711408648 + ... + 1711408719.

Almost surely, 2^123221425212 is an apocalyptic number.

123221425212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123221425212 is an abundant number, since it is smaller than the sum of its proper divisors (188254955276).

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

123221425212 is a wasteful number, since it uses less digits than its factorization.

123221425212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422817377 (or 3422817372 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

Adding to 123221425212 its reverse (212524122321), we get a palindrome (335745547533).

The spelling of 123221425212 in words is "one hundred twenty-three billion, two hundred twenty-one million, four hundred twenty-five thousand, two hundred twelve".