122890019569128 has 128 divisors (see below), whose sum is σ = 390137465260800. Its totient is φ = 35110496452608.

The previous prime is 122890019569103. The next prime is 122890019569297. The reversal of 122890019569128 is 821965910098221.

122890019569128 is a `hidden beast` number, since 12 + 28 + 9 + 0 + 0 + 19 + 569 + 1 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56560600 + ... + 58693112.

It is an arithmetic number, because the mean of its divisors is an integer number (3047948947350).

Almost surely, 2^{122890019569128} is an apocalyptic number.

122890019569128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

122890019569128 is an abundant number, since it is smaller than the sum of its proper divisors (267247445691672).

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

122890019569128 is a wasteful number, since it uses less digits than its factorization.

122890019569128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170648 (or 2170638 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 63.

The spelling of 122890019569128 in words is "one hundred twenty-two trillion, eight hundred ninety billion, nineteen million, five hundred sixty-nine thousand, one hundred twenty-eight".