222117799 has 4 divisors (see below), whose sum is σ = 222147640. Its totient is φ = 222087960.

The previous prime is 222117773. The next prime is 222117803. The reversal of 222117799 is 997711222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 222117799 - 2⁷ = 222117671 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222117719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6412 + ... + 22030.

It is an arithmetic number, because the mean of its divisors is an integer number (55536910).

Almost surely, 2^222117799 is an apocalyptic number.

222117799 is a deficient number, since it is larger than the sum of its proper divisors (29841).

222117799 is a wasteful number, since it uses less digits than its factorization.

222117799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29840.

The product of its digits is 31752, while the sum is 40.

The square root of 222117799 is about 14903.6169770965. The cubic root of 222117799 is about 605.6119746191.

The spelling of 222117799 in words is "two hundred twenty-two million, one hundred seventeen thousand, seven hundred ninety-nine".