122351138 has 48 divisors (see below), whose sum is σ = 231921144. Its totient is φ = 47980800.

The previous prime is 122351137. The next prime is 122351197. The reversal of 122351138 is 831153221.

It can be written as a sum of positive squares in 4 ways, for example, as 108638929 + 13712209 = 10423^2 + 3703^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (122351137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174188 + ... + 174888.

Almost surely, 2^122351138 is an apocalyptic number.

122351138 is a deficient number, since it is larger than the sum of its proper divisors (109570006).

122351138 is a wasteful number, since it uses less digits than its factorization.

122351138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867 (or 860 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 122351138 is about 11061.2448666504. The cubic root of 122351138 is about 496.4429386374.

The spelling of 122351138 in words is "one hundred twenty-two million, three hundred fifty-one thousand, one hundred thirty-eight".