122400122650 has 96 divisors (see below), whose sum is σ = 249750889920. Its totient is φ = 44353351680.

The previous prime is 122400122629. The next prime is 122400122707. The reversal of 122400122650 is 56221004221.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26190714 + ... + 26195386.

It is an arithmetic number, because the mean of its divisors is an integer number (2601571770).

Almost surely, 2^122400122650 is an apocalyptic number.

122400122650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122400122650 is an abundant number, since it is smaller than the sum of its proper divisors (127350767270).

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

122400122650 is a wasteful number, since it uses less digits than its factorization.

122400122650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5440 (or 5435 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 122400122650 its reverse (56221004221), we get a palindrome (178621126871).

The spelling of 122400122650 in words is "one hundred twenty-two billion, four hundred million, one hundred twenty-two thousand, six hundred fifty".