122131323312 has 160 divisors (see below), whose sum is σ = 326804416512. Its totient is φ = 39272988672.

The previous prime is 122131323299. The next prime is 122131323337. The reversal of 122131323312 is 213323131221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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, 201204513 + ... + 201205119.

Almost surely, 2^122131323312 is an apocalyptic number.

122131323312 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 122131323312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163402208256).

122131323312 is an abundant number, since it is smaller than the sum of its proper divisors (204673093200).

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

122131323312 is a wasteful number, since it uses less digits than its factorization.

122131323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1429 counting only the distinct ones).

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

Adding to 122131323312 its reverse (213323131221), we get a palindrome (335454454533).

The spelling of 122131323312 in words is "one hundred twenty-two billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred twelve".