121609974115 has 16 divisors (see below), whose sum is σ = 166836864960. Its totient is φ = 83360960640.

The previous prime is 121609974041. The next prime is 121609974131. The reversal of 121609974115 is 511479906121.

It is not a de Polignac number, because 121609974115 - 2¹¹ = 121609972067 is a prime.

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, 495396 + ... + 699025.

It is an arithmetic number, because the mean of its divisors is an integer number (10427304060).

Almost surely, 2^121609974115 is an apocalyptic number.

121609974115 is a deficient number, since it is larger than the sum of its proper divisors (45226890845).

121609974115 is a wasteful number, since it uses less digits than its factorization.

121609974115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197342.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 121609974115 in words is "one hundred twenty-one billion, six hundred nine million, nine hundred seventy-four thousand, one hundred fifteen".