1222344556679 has 16 divisors (see below), whose sum is σ = 1248194943072. Its totient is φ = 1196599692288.

The previous prime is 1222344556663. The next prime is 1222344556681. The reversal of 1222344556679 is 9766554432221.

It is a cyclic number.

It is not a de Polignac number, because 1222344556679 - 2⁴ = 1222344556663 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222344556879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62942579 + ... + 62961995.

It is an arithmetic number, because the mean of its divisors is an integer number (78012183942).

Almost surely, 2^{1222344556679} is an apocalyptic number.

1222344556679 is a deficient number, since it is larger than the sum of its proper divisors (25850386393).

1222344556679 is a wasteful number, since it uses less digits than its factorization.

1222344556679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22066.

The product of its digits is 21772800, while the sum is 56.

The spelling of 1222344556679 in words is "one trillion, two hundred twenty-two billion, three hundred forty-four million, five hundred fifty-six thousand, six hundred seventy-nine".