2221377863 has 2 divisors, whose sum is σ = 2221377864. Its totient is φ = 2221377862.

The previous prime is 2221377787. The next prime is 2221377889. The reversal of 2221377863 is 3687731222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221377863 - 2¹² = 2221373767 is a prime.

It is a super-2 number, since 2×2221377863² = 9869039220452893538, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2221377863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221373863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110688931 + 1110688932.

It is an arithmetic number, because the mean of its divisors is an integer number (1110688932).

Almost surely, 2^2221377863 is an apocalyptic number.

2221377863 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221377863 is an equidigital number, since it uses as much as digits as its factorization.

2221377863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 41.

The square root of 2221377863 is about 47131.4954462512. The cubic root of 2221377863 is about 1304.7905817223.

The spelling of 2221377863 in words is "two billion, two hundred twenty-one million, three hundred seventy-seven thousand, eight hundred sixty-three".