22221032991247 has 2 divisors, whose sum is σ = 22221032991248. Its totient is φ = 22221032991246.

The previous prime is 22221032991229. The next prime is 22221032991259. The reversal of 22221032991247 is 74219923012222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221032991247 - 2¹⁵ = 22221032958479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22221032991197 and 22221032991206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221032991847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110516495623 + 11110516495624.

It is an arithmetic number, because the mean of its divisors is an integer number (11110516495624).

Almost surely, 2^{22221032991247} is an apocalyptic number.

22221032991247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221032991247 is an equidigital number, since it uses as much as digits as its factorization.

22221032991247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 22221032991247 in words is "twenty-two trillion, two hundred twenty-one billion, thirty-two million, nine hundred ninety-one thousand, two hundred forty-seven".