22722223 has 2 divisors, whose sum is σ = 22722224. Its totient is φ = 22722222.

The previous prime is 22722211. The next prime is 22722247. The reversal of 22722223 is 32222722.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22722223 - 2²¹ = 20625071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22722194 and 22722203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22722253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11361111 + 11361112.

It is an arithmetic number, because the mean of its divisors is an integer number (11361112).

Almost surely, 2^22722223 is an apocalyptic number.

22722223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22722223 is an equidigital number, since it uses as much as digits as its factorization.

22722223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1344, while the sum is 22.

The square root of 22722223 is about 4766.7832969415. The cubic root of 22722223 is about 283.2371870622.

Adding to 22722223 its reverse (32222722), we get a palindrome (54944945).

The spelling of 22722223 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred twenty-three".