121948575115 has 16 divisors (see below), whose sum is σ = 157128776640. Its totient is φ = 90526858240.

The previous prime is 121948575061. The next prime is 121948575173. The reversal of 121948575115 is 511575849121.

It is a happy number.

It is not a de Polignac number, because 121948575115 - 2²⁷ = 121814357387 is a prime.

It is an unprimeable number.

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, 10097410 + ... + 10109479.

It is an arithmetic number, because the mean of its divisors is an integer number (9820548540).

Almost surely, 2^121948575115 is an apocalyptic number.

121948575115 is a deficient number, since it is larger than the sum of its proper divisors (35180201525).

121948575115 is a wasteful number, since it uses less digits than its factorization.

121948575115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20206982.

The product of its digits is 504000, while the sum is 49.

The spelling of 121948575115 in words is "one hundred twenty-one billion, nine hundred forty-eight million, five hundred seventy-five thousand, one hundred fifteen".