122138308 has 12 divisors (see below), whose sum is σ = 224991760. Its totient is φ = 57854952.

The previous prime is 122138299. The next prime is 122138309. The reversal of 122138308 is 803831221.

It is a super-2 number, since 2×122138308² = 29835532562205728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122138309) 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, 803466 + ... + 803617.

Almost surely, 2^122138308 is an apocalyptic number.

It is an amenable number.

122138308 is a deficient number, since it is larger than the sum of its proper divisors (102853452).

122138308 is a wasteful number, since it uses less digits than its factorization.

122138308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607106 (or 1607104 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 122138308 is about 11051.6201527197. The cubic root of 122138308 is about 496.1549171399.

Adding to 122138308 its reverse (803831221), we get a palindrome (925969529).

The spelling of 122138308 in words is "one hundred twenty-two million, one hundred thirty-eight thousand, three hundred eight".