2221373863 has 2 divisors, whose sum is σ = 2221373864. Its totient is φ = 2221373862.

The previous prime is 2221373857. The next prime is 2221373881. The reversal of 2221373863 is 3683731222.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221373863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221373263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110686931 + 1110686932.

It is an arithmetic number, because the mean of its divisors is an integer number (1110686932).

Almost surely, 2^2221373863 is an apocalyptic number.

2221373863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221373863 is an equidigital number, since it uses as much as digits as its factorization.

2221373863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 2221373863 is about 47131.4530117628. The cubic root of 2221373863 is about 1304.7897985499.

The spelling of 2221373863 in words is "two billion, two hundred twenty-one million, three hundred seventy-three thousand, eight hundred sixty-three".