2221684445231 has 2 divisors, whose sum is σ = 2221684445232. Its totient is φ = 2221684445230.

The previous prime is 2221684445173. The next prime is 2221684445249. The reversal of 2221684445231 is 1325444861222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221684445231 - 2¹⁸ = 2221684183087 is a prime.

It is a super-2 number, since 2×2221684445231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221684441231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110842222615 + 1110842222616.

It is an arithmetic number, because the mean of its divisors is an integer number (1110842222616).

Almost surely, 2^{2221684445231} is an apocalyptic number.

2221684445231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221684445231 is an equidigital number, since it uses as much as digits as its factorization.

2221684445231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 737280, while the sum is 44.

The spelling of 2221684445231 in words is "two trillion, two hundred twenty-one billion, six hundred eighty-four million, four hundred forty-five thousand, two hundred thirty-one".