120200161 has 4 divisors (see below), whose sum is σ = 123448852. Its totient is φ = 116951472.

The previous prime is 120200123. The next prime is 120200167. The reversal of 120200161 is 161002021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161002021 = 10847 ⋅14843.

It can be written as a sum of positive squares in 2 ways, for example, as 102819600 + 17380561 = 10140^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 120200161 - 2⁷ = 120200033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120200167) 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, 1624290 + ... + 1624363.

It is an arithmetic number, because the mean of its divisors is an integer number (30862213).

Almost surely, 2^120200161 is an apocalyptic number.

It is an amenable number.

120200161 is a deficient number, since it is larger than the sum of its proper divisors (3248691).

120200161 is an equidigital number, since it uses as much as digits as its factorization.

120200161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3248690.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 120200161 is about 10963.5834014249. The cubic root of 120200161 is about 493.5165066795.

Adding to 120200161 its reverse (161002021), we get a palindrome (281202182).

The spelling of 120200161 in words is "one hundred twenty million, two hundred thousand, one hundred sixty-one".