121215672608 has 48 divisors (see below), whose sum is σ = 244168089984. Its totient is φ = 59209463040.

The previous prime is 121215672587. The next prime is 121215672623. The reversal of 121215672608 is 806276512121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749018 + ... + 896358.

It is an arithmetic number, because the mean of its divisors is an integer number (5086835208).

Almost surely, 2^121215672608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121215672608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122084044992).

121215672608 is an abundant number, since it is smaller than the sum of its proper divisors (122952417376).

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

121215672608 is a wasteful number, since it uses less digits than its factorization.

121215672608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147945 (or 147937 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 121215672608 in words is "one hundred twenty-one billion, two hundred fifteen million, six hundred seventy-two thousand, six hundred eight".