121279892328 has 64 divisors (see below), whose sum is σ = 385015536000. Its totient is φ = 34651397376.

The previous prime is 121279892311. The next prime is 121279892333. The reversal of 121279892328 is 823298972121.

121279892328 is a `hidden beast` number, since 121 + 27 + 98 + 92 + 328 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40104273 + ... + 40107296.

It is an arithmetic number, because the mean of its divisors is an integer number (6015867750).

Almost surely, 2^121279892328 is an apocalyptic number.

121279892328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121279892328 is an abundant number, since it is smaller than the sum of its proper divisors (263735643672).

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

121279892328 is a wasteful number, since it uses less digits than its factorization.

121279892328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80211591 (or 80211581 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 121279892328 in words is "one hundred twenty-one billion, two hundred seventy-nine million, eight hundred ninety-two thousand, three hundred twenty-eight".