136021327217 has 4 divisors (see below), whose sum is σ = 136023596016. Its totient is φ = 136019058420.

The previous prime is 136021327207. The next prime is 136021327229. The reversal of 136021327217 is 712723120631.

It is a happy number.

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: 712723120631 = 1861 ⋅382978571.

It is a cyclic number.

It is not a de Polignac number, because 136021327217 - 2⁴ = 136021327201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136021327207) 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, 1041959 + ... + 1165212.

It is an arithmetic number, because the mean of its divisors is an integer number (34005899004).

Almost surely, 2^136021327217 is an apocalyptic number.

It is an amenable number.

136021327217 is a deficient number, since it is larger than the sum of its proper divisors (2268799).

136021327217 is an equidigital number, since it uses as much as digits as its factorization.

136021327217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268798.

The product of its (nonzero) digits is 21168, while the sum is 35.

Adding to 136021327217 its reverse (712723120631), we get a palindrome (848744447848).

The spelling of 136021327217 in words is "one hundred thirty-six billion, twenty-one million, three hundred twenty-seven thousand, two hundred seventeen".