1222347816679 has 4 divisors (see below), whose sum is σ = 1333470345480. Its totient is φ = 1111225287880.

The previous prime is 1222347816671. The next prime is 1222347816691. The reversal of 1222347816679 is 9766187432221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1222347816679 - 2³ = 1222347816671 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 (1222347816671) 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, 55561264384 + ... + 55561264405.

It is an arithmetic number, because the mean of its divisors is an integer number (333367586370).

Almost surely, 2^{1222347816679} is an apocalyptic number.

1222347816679 is a deficient number, since it is larger than the sum of its proper divisors (111122528801).

1222347816679 is a wasteful number, since it uses less digits than its factorization.

1222347816679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111122528800.

The product of its digits is 12192768, while the sum is 58.

The spelling of 1222347816679 in words is "one trillion, two hundred twenty-two billion, three hundred forty-seven million, eight hundred sixteen thousand, six hundred seventy-nine".