26222213 has 2 divisors, whose sum is σ = 26222214. Its totient is φ = 26222212.

The previous prime is 26222197. The next prime is 26222219. The reversal of 26222213 is 31222262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18258529 + 7963684 = 4273^2 + 2822^2 .

It is a cyclic number.

It is not a de Polignac number, because 26222213 - 2⁴ = 26222197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13111106 + 13111107.

It is an arithmetic number, because the mean of its divisors is an integer number (13111107).

Almost surely, 2^26222213 is an apocalyptic number.

It is an amenable number.

26222213 is a deficient number, since it is larger than the sum of its proper divisors (1).

26222213 is an equidigital number, since it uses as much as digits as its factorization.

26222213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 20.

The square root of 26222213 is about 5120.7629314390. The cubic root of 26222213 is about 297.0911947355.

Adding to 26222213 its reverse (31222262), we get a palindrome (57444475).

The spelling of 26222213 in words is "twenty-six million, two hundred twenty-two thousand, two hundred thirteen".