135225012021213 has 8 divisors (see below), whose sum is σ = 180321175552576. Its totient is φ = 90139428252000.

The previous prime is 135225012021193. The next prime is 135225012021247. The reversal of 135225012021213 is 312120210522531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135225012021213 - 2²¹ = 135225009924061 is a prime.

It is a super-2 number, since 2×135225012021213² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135225012021013) 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, 2644910713 + ... + 2644961838.

It is an arithmetic number, because the mean of its divisors is an integer number (22540146944072).

Almost surely, 2^{135225012021213} is an apocalyptic number.

It is an amenable number.

135225012021213 is a deficient number, since it is larger than the sum of its proper divisors (45096163531363).

135225012021213 is an equidigital number, since it uses as much as digits as its factorization.

135225012021213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289881075.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 135225012021213 its reverse (312120210522531), we get a palindrome (447345222543744).

The spelling of 135225012021213 in words is "one hundred thirty-five trillion, two hundred twenty-five billion, twelve million, twenty-one thousand, two hundred thirteen".