121871590080 has 112 divisors (see below), whose sum is σ = 387790395360. Its totient is φ = 32427859968.

The previous prime is 121871590021. The next prime is 121871590081. The reversal of 121871590080 is 80095178121.

It is not an unprimeable number, because it can be changed into a prime (121871590081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 299826 + ... + 577614.

Almost surely, 2^121871590080 is an apocalyptic number.

121871590080 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 121871590080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193895197680).

121871590080 is an abundant number, since it is smaller than the sum of its proper divisors (265918805280).

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

121871590080 is a wasteful number, since it uses less digits than its factorization.

121871590080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278266 (or 278256 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 42.

The spelling of 121871590080 in words is "one hundred twenty-one billion, eight hundred seventy-one million, five hundred ninety thousand, eighty".