23221223 has 2 divisors, whose sum is σ = 23221224. Its totient is φ = 23221222.

The previous prime is 23221193. The next prime is 23221241. The reversal of 23221223 is 32212232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23221223 - 2²² = 19026919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23221273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11610611 + 11610612.

It is an arithmetic number, because the mean of its divisors is an integer number (11610612).

Almost surely, 2^23221223 is an apocalyptic number.

23221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

23221223 is an equidigital number, since it uses as much as digits as its factorization.

23221223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 17.

The square root of 23221223 is about 4818.8404206821. The cubic root of 23221223 is about 285.2955710658.

Adding to 23221223 its reverse (32212232), we get a palindrome (55433455).

It can be divided in two parts, 2 and 3221223, that multiplied together give a palindrome (6442446).

The spelling of 23221223 in words is "twenty-three million, two hundred twenty-one thousand, two hundred twenty-three".