135230642220 has 192 divisors, whose sum is σ = 420674881536. Its totient is φ = 32284200960.

The previous prime is 135230642219. The next prime is 135230642221. The reversal of 135230642220 is 22246032531.

It is an interprime number because it is at equal distance from previous prime (135230642219) and next prime (135230642221).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (135230642221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4230337 + ... + 4262183.

It is an arithmetic number, because the mean of its divisors is an integer number (2191015008).

Almost surely, 2^135230642220 is an apocalyptic number.

135230642220 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 135230642220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210337440768).

135230642220 is an abundant number, since it is smaller than the sum of its proper divisors (285444239316).

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

135230642220 is a wasteful number, since it uses less digits than its factorization.

135230642220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32080 (or 32078 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 135230642220 its reverse (22246032531), we get a palindrome (157476674751).

The spelling of 135230642220 in words is "one hundred thirty-five billion, two hundred thirty million, six hundred forty-two thousand, two hundred twenty".