122211137 has 4 divisors (see below), whose sum is σ = 122402436. Its totient is φ = 122019840.

The previous prime is 122211091. The next prime is 122211157. The reversal of 122211137 is 731112221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 731112221 = 7 ⋅104444603.

It can be written as a sum of positive squares in 2 ways, for example, as 46799281 + 75411856 = 6841^2 + 8684^2 .

It is a cyclic number.

It is not a de Polignac number, because 122211137 - 2²⁴ = 105433921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122211157) 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, 94688 + ... + 95969.

It is an arithmetic number, because the mean of its divisors is an integer number (30600609).

Almost surely, 2^122211137 is an apocalyptic number.

It is an amenable number.

122211137 is a deficient number, since it is larger than the sum of its proper divisors (191299).

122211137 is an equidigital number, since it uses as much as digits as its factorization.

122211137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191298.

The product of its digits is 168, while the sum is 20.

The square root of 122211137 is about 11054.9146084445. The cubic root of 122211137 is about 496.2535137973.

Adding to 122211137 its reverse (731112221), we get a palindrome (853323358).

The spelling of 122211137 in words is "one hundred twenty-two million, two hundred eleven thousand, one hundred thirty-seven".