122773686377221 has 12 divisors (see below), whose sum is σ = 140816962603296. Its totient is φ = 106759727282120.

The previous prime is 122773686377171. The next prime is 122773686377249.

It is a happy number.

122773686377221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 122773686377221 - 2⁷ = 122773686377093 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 (122773686377261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22057792111 + ... + 22057797676.

It is an arithmetic number, because the mean of its divisors is an integer number (11734746883608).

Almost surely, 2^{122773686377221} is an apocalyptic number.

122773686377221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122773686377221 is a deficient number, since it is larger than the sum of its proper divisors (18043276226075).

122773686377221 is a wasteful number, since it uses less digits than its factorization.

122773686377221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44115589832 (or 44115589821 counting only the distinct ones).

The product of its digits is 99574272, while the sum is 64.

The spelling of 122773686377221 in words is "one hundred twenty-two trillion, seven hundred seventy-three billion, six hundred eighty-six million, three hundred seventy-seven thousand, two hundred twenty-one".