122115312 has 60 divisors (see below), whose sum is σ = 372826584. Its totient is φ = 37004160.

The previous prime is 122115307. The next prime is 122115319. The reversal of 122115312 is 213511221.

122115312 is a `hidden beast` number, since 122 + 11 + 531 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122115319) 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, 36963 + ... + 40130.

Almost surely, 2^122115312 is an apocalyptic number.

122115312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122115312 is an abundant number, since it is smaller than the sum of its proper divisors (250711272).

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

122115312 is a wasteful number, since it uses less digits than its factorization.

122115312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77118 (or 77109 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 122115312 is about 11050.5797133001. The cubic root of 122115312 is about 496.1237767746.

Adding to 122115312 its reverse (213511221), we get a palindrome (335626533).

The spelling of 122115312 in words is "one hundred twenty-two million, one hundred fifteen thousand, three hundred twelve".