122145127 has 4 divisors (see below), whose sum is σ = 131540920. Its totient is φ = 112749336.

The previous prime is 122145097. The next prime is 122145137. The reversal of 122145127 is 721541221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 721541221 = 2053 ⋅351457.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122145127 is a prime.

It is a super-2 number, since 2×122145127² = 29838864099692258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122145137) 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, 4697877 + ... + 4697902.

It is an arithmetic number, because the mean of its divisors is an integer number (32885230).

Almost surely, 2^122145127 is an apocalyptic number.

122145127 is a deficient number, since it is larger than the sum of its proper divisors (9395793).

122145127 is an equidigital number, since it uses as much as digits as its factorization.

122145127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9395792.

The product of its digits is 1120, while the sum is 25.

The square root of 122145127 is about 11051.9286552167. The cubic root of 122145127 is about 496.1641504358.

Adding to 122145127 its reverse (721541221), we get a palindrome (843686348).

The spelling of 122145127 in words is "one hundred twenty-two million, one hundred forty-five thousand, one hundred twenty-seven".