122235138 has 24 divisors (see below), whose sum is σ = 269334000. Its totient is φ = 40054104.

The previous prime is 122235137. The next prime is 122235143. The reversal of 122235138 is 831532221.

122235138 is a `hidden beast` number, since 122 + 23 + 513 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (122235131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56488 + ... + 58611.

It is an arithmetic number, because the mean of its divisors is an integer number (11222250).

Almost surely, 2^122235138 is an apocalyptic number.

122235138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

122235138 is an abundant number, since it is smaller than the sum of its proper divisors (147098862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122235138 is a wasteful number, since it uses less digits than its factorization.

122235138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115166 (or 115163 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 122235138 is about 11056.0000904486. Note that the first 4 decimals coincide. The cubic root of 122235138 is about 496.2859980189.

Adding to 122235138 its reverse (831532221), we get a palindrome (953767359).

The spelling of 122235138 in words is "one hundred twenty-two million, two hundred thirty-five thousand, one hundred thirty-eight".