120997951199 has 4 divisors (see below), whose sum is σ = 127366264440. Its totient is φ = 114629637960.

The previous prime is 120997951157. The next prime is 120997951211. The reversal of 120997951199 is 991159799021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991159799021 = 7 ⋅141594257003.

It is not a de Polignac number, because 120997951199 - 2²⁸ = 120729515743 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 (120997951499) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3184156592 + ... + 3184156629.

It is an arithmetic number, because the mean of its divisors is an integer number (31841566110).

Almost surely, 2^120997951199 is an apocalyptic number.

120997951199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

120997951199 is a deficient number, since it is larger than the sum of its proper divisors (6368313241).

120997951199 is an equidigital number, since it uses as much as digits as its factorization.

120997951199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368313240.

The product of its (nonzero) digits is 4133430, while the sum is 62.

The spelling of 120997951199 in words is "one hundred twenty billion, nine hundred ninety-seven million, nine hundred fifty-one thousand, one hundred ninety-nine".