122784877128 has 32 divisors (see below), whose sum is σ = 316864200960. Its totient is φ = 39608024640.

The previous prime is 122784877073. The next prime is 122784877151. The reversal of 122784877128 is 821778487221.

It is a super-2 number, since 2×122784877128² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82515975 + ... + 82517462.

It is an arithmetic number, because the mean of its divisors is an integer number (9902006280).

Almost surely, 2^122784877128 is an apocalyptic number.

It is an amenable number.

122784877128 is an abundant number, since it is smaller than the sum of its proper divisors (194079323832).

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

122784877128 is a wasteful number, since it uses less digits than its factorization.

122784877128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165033477 (or 165033473 counting only the distinct ones).

The product of its digits is 5619712, while the sum is 57.

The spelling of 122784877128 in words is "one hundred twenty-two billion, seven hundred eighty-four million, eight hundred seventy-seven thousand, one hundred twenty-eight".