135246022321 has 4 divisors (see below), whose sum is σ = 138123597312. Its totient is φ = 132368447332.

The previous prime is 135246022313. The next prime is 135246022349. The reversal of 135246022321 is 123220642531.

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.

It is a cyclic number.

It is not a de Polignac number, because 135246022321 - 2³ = 135246022313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135246022361) 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, 1438787425 + ... + 1438787518.

It is an arithmetic number, because the mean of its divisors is an integer number (34530899328).

Almost surely, 2^135246022321 is an apocalyptic number.

It is an amenable number.

135246022321 is a deficient number, since it is larger than the sum of its proper divisors (2877574991).

135246022321 is an equidigital number, since it uses as much as digits as its factorization.

135246022321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877574990.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 135246022321 its reverse (123220642531), we get a palindrome (258466664852).

The spelling of 135246022321 in words is "one hundred thirty-five billion, two hundred forty-six million, twenty-two thousand, three hundred twenty-one".