135122241 has 4 divisors (see below), whose sum is σ = 180162992. Its totient is φ = 90081492.

The previous prime is 135122237. The next prime is 135122249. The reversal of 135122241 is 142221531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142221531 = 3 ⋅47407177.

It is not a de Polignac number, because 135122241 - 2² = 135122237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135122249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22520371 + ... + 22520376.

It is an arithmetic number, because the mean of its divisors is an integer number (45040748).

Almost surely, 2^135122241 is an apocalyptic number.

It is an amenable number.

135122241 is a deficient number, since it is larger than the sum of its proper divisors (45040751).

135122241 is an equidigital number, since it uses as much as digits as its factorization.

135122241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45040750.

The product of its digits is 480, while the sum is 21.

The square root of 135122241 is about 11624.2092634295. The cubic root of 135122241 is about 513.1475737143.

Adding to 135122241 its reverse (142221531), we get a palindrome (277343772).

It can be divided in two parts, 13512 and 2241, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 135122241 in words is "one hundred thirty-five million, one hundred twenty-two thousand, two hundred forty-one".