22223651 has 2 divisors, whose sum is σ = 22223652. Its totient is φ = 22223650.

The previous prime is 22223633. The next prime is 22223659. The reversal of 22223651 is 15632222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22223651 - 2¹⁴ = 22207267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22223659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111825 + 11111826.

It is an arithmetic number, because the mean of its divisors is an integer number (11111826).

Almost surely, 2^22223651 is an apocalyptic number.

22223651 is a deficient number, since it is larger than the sum of its proper divisors (1).

22223651 is an equidigital number, since it uses as much as digits as its factorization.

22223651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 23.

The square root of 22223651 is about 4714.1967502428. The cubic root of 22223651 is about 281.1502470274.

Adding to 22223651 its reverse (15632222), we get a palindrome (37855873).

The spelling of 22223651 in words is "twenty-two million, two hundred twenty-three thousand, six hundred fifty-one".