1222356679 has 8 divisors (see below), whose sum is σ = 1256297328. Its totient is φ = 1188463680.

The previous prime is 1222356647. The next prime is 1222356701. The reversal of 1222356679 is 9766532221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1222356679 - 2⁵ = 1222356647 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 (1222356479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43644 + ... + 65950.

It is an arithmetic number, because the mean of its divisors is an integer number (157037166).

Almost surely, 2^1222356679 is an apocalyptic number.

1222356679 is a deficient number, since it is larger than the sum of its proper divisors (33940649).

1222356679 is a wasteful number, since it uses less digits than its factorization.

1222356679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23825.

The product of its digits is 272160, while the sum is 43.

The square root of 1222356679 is about 34962.2178787330. The cubic root of 1222356679 is about 1069.2173153547.

The spelling of 1222356679 in words is "one billion, two hundred twenty-two million, three hundred fifty-six thousand, six hundred seventy-nine".