120661171051 has 4 divisors (see below), whose sum is σ = 120971354400. Its totient is φ = 120350987704.

The previous prime is 120661171021. The next prime is 120661171091. The reversal of 120661171051 is 150171166021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150171166021 = 5479 ⋅27408499.

It is a cyclic number.

It is not a de Polignac number, because 120661171051 - 2⁵ = 120661171019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120661171021) 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, 155091091 + ... + 155091868.

It is an arithmetic number, because the mean of its divisors is an integer number (30242838600).

Almost surely, 2^120661171051 is an apocalyptic number.

120661171051 is a deficient number, since it is larger than the sum of its proper divisors (310183349).

120661171051 is an equidigital number, since it uses as much as digits as its factorization.

120661171051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310183348.

The product of its (nonzero) digits is 2520, while the sum is 31.

The spelling of 120661171051 in words is "one hundred twenty billion, six hundred sixty-one million, one hundred seventy-one thousand, fifty-one".