122131335402 has 24 divisors (see below), whose sum is σ = 270771799584. Its totient is φ = 39763690344.

The previous prime is 122131335367. The next prime is 122131335413. The reversal of 122131335402 is 204533131221.

122131335402 is a `hidden beast` number, since 1 + 2 + 213 + 13 + 35 + 402 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78895438 + ... + 78896985.

It is an arithmetic number, because the mean of its divisors is an integer number (11282158316).

Almost surely, 2^122131335402 is an apocalyptic number.

122131335402 is an abundant number, since it is smaller than the sum of its proper divisors (148640464182).

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

122131335402 is a wasteful number, since it uses less digits than its factorization.

122131335402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157792474 (or 157792471 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 122131335402 its reverse (204533131221), we get a palindrome (326664466623).

The spelling of 122131335402 in words is "one hundred twenty-two billion, one hundred thirty-one million, three hundred thirty-five thousand, four hundred two".