135020325073121 has 4 divisors (see below), whose sum is σ = 135022191278532. Its totient is φ = 135018458867712.

The previous prime is 135020325073103. The next prime is 135020325073141. The reversal of 135020325073121 is 121370523020531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 127382486368225 + 7637838704896 = 11286385^2 + 2763664^2 .

It is a cyclic number.

It is not a de Polignac number, because 135020325073121 - 2³⁴ = 135003145203937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135020325073141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932994176 + ... + 933138881.

It is an arithmetic number, because the mean of its divisors is an integer number (33755547819633).

Almost surely, 2^{135020325073121} is an apocalyptic number.

It is an amenable number.

135020325073121 is a deficient number, since it is larger than the sum of its proper divisors (1866205411).

135020325073121 is an equidigital number, since it uses as much as digits as its factorization.

135020325073121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1866205410.

The product of its (nonzero) digits is 37800, while the sum is 35.

Adding to 135020325073121 its reverse (121370523020531), we get a palindrome (256390848093652).

The spelling of 135020325073121 in words is "one hundred thirty-five trillion, twenty billion, three hundred twenty-five million, seventy-three thousand, one hundred twenty-one".