1222345677879 has 12 divisors (see below), whose sum is σ = 1781808685800. Its totient is φ = 807420997584.

The previous prime is 1222345677877. The next prime is 1222345677887. The reversal of 1222345677879 is 9787765432221.

It is a happy number.

1222345677879 is a `hidden beast` number, since 1 + 22 + 23 + 456 + 7 + 78 + 79 = 666.

It is not a de Polignac number, because 1222345677879 - 2¹ = 1222345677877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222345677877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623009049 + ... + 623011010.

It is an arithmetic number, because the mean of its divisors is an integer number (148484057150).

Almost surely, 2^{1222345677879} is an apocalyptic number.

1222345677879 is a deficient number, since it is larger than the sum of its proper divisors (559463007921).

1222345677879 is a wasteful number, since it uses less digits than its factorization.

1222345677879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246020174 (or 1246020171 counting only the distinct ones).

The product of its digits is 71124480, while the sum is 63.

The spelling of 1222345677879 in words is "one trillion, two hundred twenty-two billion, three hundred forty-five million, six hundred seventy-seven thousand, eight hundred seventy-nine".