121112022221999 has 4 divisors (see below), whose sum is σ = 121112734995864. Its totient is φ = 121111309448136.

The previous prime is 121112022221959. The next prime is 121112022222001. The reversal of 121112022221999 is 999122220211121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121112022221999 - 2³⁶ = 121043302745263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121112022221959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 356131997 + ... + 356471910.

It is an arithmetic number, because the mean of its divisors is an integer number (30278183748966).

Almost surely, 2^{121112022221999} is an apocalyptic number.

121112022221999 is a deficient number, since it is larger than the sum of its proper divisors (712773865).

121112022221999 is an equidigital number, since it uses as much as digits as its factorization.

121112022221999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712773864.

The product of its (nonzero) digits is 46656, while the sum is 44.

The spelling of 121112022221999 in words is "one hundred twenty-one trillion, one hundred twelve billion, twenty-two million, two hundred twenty-one thousand, nine hundred ninety-nine".