121555013631115 has 8 divisors (see below), whose sum is σ = 145871262937008. Its totient is φ = 97240513185120.

The previous prime is 121555013631097. The next prime is 121555013631179. The reversal of 121555013631115 is 511136310555121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-121555013631115 is a prime.

It is a super-2 number, since 2×121555013631115² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

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, 437062056 + ... + 437340085.

It is an arithmetic number, because the mean of its divisors is an integer number (18233907867126).

Almost surely, 2^{121555013631115} is an apocalyptic number.

121555013631115 is a deficient number, since it is larger than the sum of its proper divisors (24316249305893).

121555013631115 is an equidigital number, since it uses as much as digits as its factorization.

121555013631115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874429949.

The product of its (nonzero) digits is 67500, while the sum is 40.

The spelling of 121555013631115 in words is "one hundred twenty-one trillion, five hundred fifty-five billion, thirteen million, six hundred thirty-one thousand, one hundred fifteen".