121274061920 has 96 divisors (see below), whose sum is σ = 312767433216. Its totient is φ = 44069875200.

The previous prime is 121274061919. The next prime is 121274061929. The reversal of 121274061920 is 29160472121.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121274061929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2672057 + ... + 2717063.

It is an arithmetic number, because the mean of its divisors is an integer number (3257994096).

Almost surely, 2^121274061920 is an apocalyptic number.

121274061920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121274061920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156383716608).

121274061920 is an abundant number, since it is smaller than the sum of its proper divisors (191493371296).

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

121274061920 is a wasteful number, since it uses less digits than its factorization.

121274061920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46564 (or 46556 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 121274061920 in words is "one hundred twenty-one billion, two hundred seventy-four million, sixty-one thousand, nine hundred twenty".