122131031200 has 36 divisors (see below), whose sum is σ = 298152381870. Its totient is φ = 48852412160.

The previous prime is 122131031189. The next prime is 122131031203. The reversal of 122131031200 is 2130131221.

It can be written as a sum of positive squares in 3 ways, for example, as 61601254416 + 60529776784 = 248196^2 + 246028^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (122131031203) 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, 76331095 + ... + 76332694.

Almost surely, 2^122131031200 is an apocalyptic number.

122131031200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122131031200 is an abundant number, since it is smaller than the sum of its proper divisors (176021350670).

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

122131031200 is a wasteful number, since it uses less digits than its factorization.

122131031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152663809 (or 152663796 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 122131031200 its reverse (2130131221), we get a palindrome (124261162421).

The spelling of 122131031200 in words is "one hundred twenty-two billion, one hundred thirty-one million, thirty-one thousand, two hundred".