222217943 has 2 divisors, whose sum is σ = 222217944. Its totient is φ = 222217942.

The previous prime is 222217903. The next prime is 222217949. The reversal of 222217943 is 349712222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222217943 - 2¹² = 222213847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222217949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111108971 + 111108972.

It is an arithmetic number, because the mean of its divisors is an integer number (111108972).

Almost surely, 2^222217943 is an apocalyptic number.

222217943 is a deficient number, since it is larger than the sum of its proper divisors (1).

222217943 is an equidigital number, since it uses as much as digits as its factorization.

222217943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 222217943 is about 14906.9763198309. The cubic root of 222217943 is about 605.7029763210.

It can be divided in two parts, 2222179 and 43, that added together give a palindrome (2222222).

The spelling of 222217943 in words is "two hundred twenty-two million, two hundred seventeen thousand, nine hundred forty-three".