2221392931 has 2 divisors, whose sum is σ = 2221392932. Its totient is φ = 2221392930.

The previous prime is 2221392917. The next prime is 2221392937. The reversal of 2221392931 is 1392931222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221392931 - 2¹¹ = 2221390883 is a prime.

It is a super-2 number, since 2×2221392931² = 9869173107793541522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221392937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110696465 + 1110696466.

It is an arithmetic number, because the mean of its divisors is an integer number (1110696466).

Almost surely, 2^2221392931 is an apocalyptic number.

2221392931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221392931 is an equidigital number, since it uses as much as digits as its factorization.

2221392931 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 34.

The square root of 2221392931 is about 47131.6552966263. The cubic root of 2221392931 is about 1304.7935319243.

The spelling of 2221392931 in words is "two billion, two hundred twenty-one million, three hundred ninety-two thousand, nine hundred thirty-one".