135202125601213 has 12 divisors (see below), whose sum is σ = 148670597402460. Its totient is φ = 122861402079680.

The previous prime is 135202125601201. The next prime is 135202125601237. The reversal of 135202125601213 is 312106521202531.

It can be written as a sum of positive squares in 2 ways, for example, as 90419502512889 + 44782623088324 = 9508917^2 + 6691982^2 .

It is not a de Polignac number, because 135202125601213 - 2²⁹ = 135201588730301 is a prime.

It is a super-2 number, since 2×135202125601213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135202125601913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 225249928 + ... + 225849361.

It is an arithmetic number, because the mean of its divisors is an integer number (12389216450205).

Almost surely, 2^{135202125601213} is an apocalyptic number.

It is an amenable number.

135202125601213 is a deficient number, since it is larger than the sum of its proper divisors (13468471801247).

135202125601213 is a wasteful number, since it uses less digits than its factorization.

135202125601213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451101788 (or 451101777 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 135202125601213 its reverse (312106521202531), we get a palindrome (447308646803744).

The spelling of 135202125601213 in words is "one hundred thirty-five trillion, two hundred two billion, one hundred twenty-five million, six hundred one thousand, two hundred thirteen".