22221257671 has 2 divisors, whose sum is σ = 22221257672. Its totient is φ = 22221257670.

The previous prime is 22221257659. The next prime is 22221257677. The reversal of 22221257671 is 17675212222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22221257671 - 2⁷ = 22221257543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22221257671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221257677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110628835 + 11110628836.

It is an arithmetic number, because the mean of its divisors is an integer number (11110628836).

Almost surely, 2^22221257671 is an apocalyptic number.

22221257671 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221257671 is an equidigital number, since it uses as much as digits as its factorization.

22221257671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

Adding to 22221257671 its reverse (17675212222), we get a palindrome (39896469893).

The spelling of 22221257671 in words is "twenty-two billion, two hundred twenty-one million, two hundred fifty-seven thousand, six hundred seventy-one".