122640347237 has 4 divisors (see below), whose sum is σ = 122666562720. Its totient is φ = 122614131756.

The previous prime is 122640347233. The next prime is 122640347251. The reversal of 122640347237 is 732743046221.

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 122640347237 - 2² = 122640347233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122640347194 and 122640347203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122640347231) 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, 13100723 + ... + 13110080.

It is an arithmetic number, because the mean of its divisors is an integer number (30666640680).

Almost surely, 2^122640347237 is an apocalyptic number.

It is an amenable number.

122640347237 is a deficient number, since it is larger than the sum of its proper divisors (26215483).

122640347237 is an equidigital number, since it uses as much as digits as its factorization.

122640347237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26215482.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 122640347237 in words is "one hundred twenty-two billion, six hundred forty million, three hundred forty-seven thousand, two hundred thirty-seven".