122115520 has 56 divisors (see below), whose sum is σ = 300837600. Its totient is φ = 47158272.

The previous prime is 122115467. The next prime is 122115523. The reversal of 122115520 is 25511221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122115523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2701 + ... + 15859.

It is an arithmetic number, because the mean of its divisors is an integer number (5372100).

Almost surely, 2^122115520 is an apocalyptic number.

122115520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122115520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150418800).

122115520 is an abundant number, since it is smaller than the sum of its proper divisors (178722080).

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

122115520 is a wasteful number, since it uses less digits than its factorization.

122115520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13205 (or 13195 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 122115520 is about 11050.5891245671. The cubic root of 122115520 is about 496.1240584583.

Adding to 122115520 its reverse (25511221), we get a palindrome (147626741).

The spelling of 122115520 in words is "one hundred twenty-two million, one hundred fifteen thousand, five hundred twenty".