22401022447 has 2 divisors, whose sum is σ = 22401022448. Its totient is φ = 22401022446.

The previous prime is 22401022393. The next prime is 22401022463. The reversal of 22401022447 is 74422010422.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22401022447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22401022487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11200511223 + 11200511224.

It is an arithmetic number, because the mean of its divisors is an integer number (11200511224).

Almost surely, 2^22401022447 is an apocalyptic number.

22401022447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22401022447 is an equidigital number, since it uses as much as digits as its factorization.

22401022447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7168, while the sum is 28.

Adding to 22401022447 its reverse (74422010422), we get a palindrome (96823032869).

The spelling of 22401022447 in words is "twenty-two billion, four hundred one million, twenty-two thousand, four hundred forty-seven".