122135332613 has 4 divisors (see below), whose sum is σ = 139583237280. Its totient is φ = 104687427948.

The previous prime is 122135332601. The next prime is 122135332643. The reversal of 122135332613 is 316233531221.

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: 316233531221 = 46147 ⋅6852743.

It is a cyclic number.

It is not a de Polignac number, because 122135332613 - 2¹⁶ = 122135267077 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122135332613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122135332643) 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, 8723952323 + ... + 8723952336.

It is an arithmetic number, because the mean of its divisors is an integer number (34895809320).

Almost surely, 2^122135332613 is an apocalyptic number.

It is an amenable number.

122135332613 is a deficient number, since it is larger than the sum of its proper divisors (17447904667).

122135332613 is an equidigital number, since it uses as much as digits as its factorization.

122135332613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17447904666.

The product of its digits is 19440, while the sum is 32.

Adding to 122135332613 its reverse (316233531221), we get a palindrome (438368863834).

The spelling of 122135332613 in words is "one hundred twenty-two billion, one hundred thirty-five million, three hundred thirty-two thousand, six hundred thirteen".