122207818501 has 4 divisors (see below), whose sum is σ = 123417797004. Its totient is φ = 120997840000.

The previous prime is 122207818487. The next prime is 122207818517. The reversal of 122207818501 is 105818702221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 105818702221 = 10259 ⋅10314719.

It can be written as a sum of positive squares in 2 ways, for example, as 88333784100 + 33874034401 = 297210^2 + 184049^2 .

It is a cyclic number.

It is not a de Polignac number, because 122207818501 - 2¹¹ = 122207816453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122207816501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604989100 + ... + 604989301.

It is an arithmetic number, because the mean of its divisors is an integer number (30854449251).

Almost surely, 2^122207818501 is an apocalyptic number.

It is an amenable number.

122207818501 is a deficient number, since it is larger than the sum of its proper divisors (1209978503).

122207818501 is a wasteful number, since it uses less digits than its factorization.

122207818501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209978502.

The product of its (nonzero) digits is 17920, while the sum is 37.

The spelling of 122207818501 in words is "one hundred twenty-two billion, two hundred seven million, eight hundred eighteen thousand, five hundred one".