22421334217 has 2 divisors, whose sum is σ = 22421334218. Its totient is φ = 22421334216.

The previous prime is 22421334149. The next prime is 22421334227. The reversal of 22421334217 is 71243312422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12217101961 + 10204232256 = 110531^2 + 101016^2 .

It is a cyclic number.

It is not a de Polignac number, because 22421334217 - 2¹¹ = 22421332169 is a prime.

It is not a weakly prime, because it can be changed into another prime (22421334227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210667108 + 11210667109.

It is an arithmetic number, because the mean of its divisors is an integer number (11210667109).

Almost surely, 2^22421334217 is an apocalyptic number.

It is an amenable number.

22421334217 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421334217 is an equidigital number, since it uses as much as digits as its factorization.

22421334217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

Adding to 22421334217 its reverse (71243312422), we get a palindrome (93664646639).

The spelling of 22421334217 in words is "twenty-two billion, four hundred twenty-one million, three hundred thirty-four thousand, two hundred seventeen".