122569965221 has 4 divisors (see below), whose sum is σ = 133712689344. Its totient is φ = 111427241100.

The previous prime is 122569965197. The next prime is 122569965253.

It is a happy number.

122569965221 is nontrivially palindromic in base 10.

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 122569965221 - 2¹⁰ = 122569964197 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 122569965221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122569965121) 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, 5571362045 + ... + 5571362066.

It is an arithmetic number, because the mean of its divisors is an integer number (33428172336).

Almost surely, 2^122569965221 is an apocalyptic number.

122569965221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122569965221 is a deficient number, since it is larger than the sum of its proper divisors (11142724123).

122569965221 is a wasteful number, since it uses less digits than its factorization.

122569965221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11142724122.

The product of its digits is 1166400, while the sum is 50.

The spelling of 122569965221 in words is "one hundred twenty-two billion, five hundred sixty-nine million, nine hundred sixty-five thousand, two hundred twenty-one".