123122315221212 has 96 divisors (see below), whose sum is σ = 304295543910400. Its totient is φ = 38637803742912.

The previous prime is 123122315221183. The next prime is 123122315221247. The reversal of 123122315221212 is 212122513221321.

It is a self number, because there is not a number n which added to its sum of digits gives 123122315221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334552239 + ... + 334920057.

Almost surely, 2^{123122315221212} is an apocalyptic number.

123122315221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123122315221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152147771955200).

123122315221212 is an abundant number, since it is smaller than the sum of its proper divisors (181173228689188).

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

123122315221212 is a wasteful number, since it uses less digits than its factorization.

123122315221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377015 (or 377013 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 123122315221212 its reverse (212122513221321), we get a palindrome (335244828442533).

The spelling of 123122315221212 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, three hundred fifteen million, two hundred twenty-one thousand, two hundred twelve".