135221125113 has 8 divisors (see below), whose sum is σ = 200327592800. Its totient is φ = 90147416724.

The previous prime is 135221125103. The next prime is 135221125153. The reversal of 135221125113 is 311521122531.

135221125113 is a `hidden beast` number, since 1 + 3 + 522 + 1 + 1 + 25 + 113 = 666.

It is not a de Polignac number, because 135221125113 - 2¹⁰ = 135221124089 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5008189819 = 135221125113 / (1 + 3 + 5 + 2 + 2 + 1 + 1 + 2 + 5 + 1 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135221125103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504094883 + ... + 2504094936.

It is an arithmetic number, because the mean of its divisors is an integer number (25040949100).

Almost surely, 2^135221125113 is an apocalyptic number.

It is an amenable number.

135221125113 is a deficient number, since it is larger than the sum of its proper divisors (65106467687).

135221125113 is an equidigital number, since it uses as much as digits as its factorization.

135221125113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008189828 (or 5008189822 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

Adding to 135221125113 its reverse (311521122531), we get a palindrome (446742247644).

The spelling of 135221125113 in words is "one hundred thirty-five billion, two hundred twenty-one million, one hundred twenty-five thousand, one hundred thirteen".