120815284171 has 4 divisors (see below), whose sum is σ = 121584808432. Its totient is φ = 120045759912.

The previous prime is 120815284147. The next prime is 120815284217. The reversal of 120815284171 is 171482518021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171482518021 = 342191 ⋅501131.

It is a cyclic number.

It is not a de Polignac number, because 120815284171 - 2¹¹ = 120815282123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120815284111) 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, 384761895 + ... + 384762208.

It is an arithmetic number, because the mean of its divisors is an integer number (30396202108).

Almost surely, 2^120815284171 is an apocalyptic number.

120815284171 is a deficient number, since it is larger than the sum of its proper divisors (769524261).

120815284171 is an equidigital number, since it uses as much as digits as its factorization.

120815284171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769524260.

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 120815284171 in words is "one hundred twenty billion, eight hundred fifteen million, two hundred eighty-four thousand, one hundred seventy-one".