122151320 has 16 divisors (see below), whose sum is σ = 274840560. Its totient is φ = 48860512.

The previous prime is 122151317. The next prime is 122151331. The reversal of 122151320 is 23151221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1526852 + ... + 1526931.

It is an arithmetic number, because the mean of its divisors is an integer number (17177535).

Almost surely, 2^122151320 is an apocalyptic number.

122151320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122151320 is an abundant number, since it is smaller than the sum of its proper divisors (152689240).

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

122151320 is a wasteful number, since it uses less digits than its factorization.

122151320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3053794 (or 3053790 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 122151320 is about 11052.2088290079. The cubic root of 122151320 is about 496.1725357960.

Subtracting from 122151320 its reverse (23151221), we obtain a palindrome (99000099).

The spelling of 122151320 in words is "one hundred twenty-two million, one hundred fifty-one thousand, three hundred twenty".