122112161 has 4 divisors (see below), whose sum is σ = 122145024. Its totient is φ = 122079300.

The previous prime is 122112113. The next prime is 122112167. The reversal of 122112161 is 161211221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122112161 - 2¹⁴ = 122095777 is a prime.

It is a super-2 number, since 2×122112161² = 29822759728179842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122112167) 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, 10025 + ... + 18566.

It is an arithmetic number, because the mean of its divisors is an integer number (30536256).

Almost surely, 2^122112161 is an apocalyptic number.

It is an amenable number.

122112161 is a deficient number, since it is larger than the sum of its proper divisors (32863).

122112161 is an equidigital number, since it uses as much as digits as its factorization.

122112161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32862.

The product of its digits is 48, while the sum is 17.

The square root of 122112161 is about 11050.4371406746. The cubic root of 122112161 is about 496.1195094979.

Adding to 122112161 its reverse (161211221), we get a palindrome (283323382).

The spelling of 122112161 in words is "one hundred twenty-two million, one hundred twelve thousand, one hundred sixty-one".