22220779 has 8 divisors (see below), whose sum is σ = 25498368. Its totient is φ = 18969000.

The previous prime is 22220777. The next prime is 22220791. The reversal of 22220779 is 97702222.

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

It is a cyclic number.

It is not a de Polignac number, because 22220779 - 2¹ = 22220777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22220779.

It is not an unprimeable number, because it can be changed into a prime (22220771) 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, 4567 + ... + 8080.

It is an arithmetic number, because the mean of its divisors is an integer number (3187296).

Almost surely, 2^22220779 is an apocalyptic number.

22220779 is a deficient number, since it is larger than the sum of its proper divisors (3277589).

22220779 is a wasteful number, since it uses less digits than its factorization.

22220779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12905.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 22220779 is about 4713.8921285918. The cubic root of 22220779 is about 281.1381353317.

The spelling of 22220779 in words is "twenty-two million, two hundred twenty thousand, seven hundred seventy-nine".