135015232120 has 64 divisors (see below), whose sum is σ = 308248416000. Its totient is φ = 53216621568.

The previous prime is 135015232103. The next prime is 135015232123. The reversal of 135015232120 is 21232510531.

It is a super-2 number, since 2×135015232120² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135015232123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 978361 + ... + 1107799.

It is an arithmetic number, because the mean of its divisors is an integer number (4816381500).

Almost surely, 2^135015232120 is an apocalyptic number.

135015232120 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 135015232120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154124208000).

135015232120 is an abundant number, since it is smaller than the sum of its proper divisors (173233183880).

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

135015232120 is a wasteful number, since it uses less digits than its factorization.

135015232120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129832 (or 129828 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 135015232120 its reverse (21232510531), we get a palindrome (156247742651).

The spelling of 135015232120 in words is "one hundred thirty-five billion, fifteen million, two hundred thirty-two thousand, one hundred twenty".