22022447 has 2 divisors, whose sum is σ = 22022448. Its totient is φ = 22022446.

The previous prime is 22022417. The next prime is 22022449. The reversal of 22022447 is 74422022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22022447 - 2¹⁰ = 22021423 is a prime.

Together with 22022449, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011223 + 11011224.

It is an arithmetic number, because the mean of its divisors is an integer number (11011224).

Almost surely, 2^22022447 is an apocalyptic number.

22022447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022447 is an equidigital number, since it uses as much as digits as its factorization.

22022447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 22022447 is about 4692.8080080054. The cubic root of 22022447 is about 280.2991997280.

Adding to 22022447 its reverse (74422022), we get a palindrome (96444469).

The spelling of 22022447 in words is "twenty-two million, twenty-two thousand, four hundred forty-seven".