121112120231999 has 32 divisors (see below), whose sum is σ = 140492814336000. Its totient is φ = 103483182084480.

The previous prime is 121112120231891. The next prime is 121112120232023. The reversal of 121112120231999 is 999132021211121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121112120231999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112120236999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478144517 + ... + 478397745.

It is an arithmetic number, because the mean of its divisors is an integer number (4390400448000).

Almost surely, 2^{121112120231999} is an apocalyptic number.

121112120231999 is a deficient number, since it is larger than the sum of its proper divisors (19380694104001).

121112120231999 is a wasteful number, since it uses less digits than its factorization.

121112120231999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304895.

The product of its (nonzero) digits is 34992, while the sum is 44.

The spelling of 121112120231999 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty million, two hundred thirty-one thousand, nine hundred ninety-nine".