222111863 has 2 divisors, whose sum is σ = 222111864. Its totient is φ = 222111862.

The previous prime is 222111859. The next prime is 222111887. The reversal of 222111863 is 368111222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222111863 - 2² = 222111859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222111803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111055931 + 111055932.

It is an arithmetic number, because the mean of its divisors is an integer number (111055932).

Almost surely, 2^222111863 is an apocalyptic number.

222111863 is a deficient number, since it is larger than the sum of its proper divisors (1).

222111863 is an equidigital number, since it uses as much as digits as its factorization.

222111863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 222111863 is about 14903.4178294779. The cubic root of 222111863 is about 605.6065796669.

The spelling of 222111863 in words is "two hundred twenty-two million, one hundred eleven thousand, eight hundred sixty-three".