122409973128 has 16 divisors (see below), whose sum is σ = 306024932880. Its totient is φ = 40803324368.

The previous prime is 122409973121. The next prime is 122409973129. The reversal of 122409973128 is 821379904221.

It is not an unprimeable number, because it can be changed into a prime (122409973121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550207750 + ... + 2550207797.

It is an arithmetic number, because the mean of its divisors is an integer number (19126558305).

Almost surely, 2^122409973128 is an apocalyptic number.

It is an amenable number.

122409973128 is an abundant number, since it is smaller than the sum of its proper divisors (183614959752).

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

122409973128 is a wasteful number, since it uses less digits than its factorization.

122409973128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100415556 (or 5100415552 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 122409973128 in words is "one hundred twenty-two billion, four hundred nine million, nine hundred seventy-three thousand, one hundred twenty-eight".