121489184880 has 1200 divisors, whose sum is σ = 528695107776. Its totient is φ = 25686097920.

The previous prime is 121489184867. The next prime is 121489184909. The reversal of 121489184880 is 88481984121.

It is a happy number.

121489184880 is a `hidden beast` number, since 1 + 2 + 1 + 489 + 1 + 84 + 8 + 80 = 666.

It is a super-2 number, since 2×121489184880² (a number of 23 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 383246482 + ... + 383246798.

Almost surely, 2^121489184880 is an apocalyptic number.

121489184880 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 121489184880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (264347553888).

121489184880 is an abundant number, since it is smaller than the sum of its proper divisors (407205922896).

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

121489184880 is a wasteful number, since it uses less digits than its factorization.

121489184880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 54.

The spelling of 121489184880 in words is "one hundred twenty-one billion, four hundred eighty-nine million, one hundred eighty-four thousand, eight hundred eighty".