22722211 has 2 divisors, whose sum is σ = 22722212. Its totient is φ = 22722210.

The previous prime is 22722169. The next prime is 22722223. The reversal of 22722211 is 11222722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22722211 - 2¹⁷ = 22591139 is a prime.

It is not a weakly prime, because it can be changed into another prime (22722311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11361105 + 11361106.

It is an arithmetic number, because the mean of its divisors is an integer number (11361106).

Almost surely, 2^22722211 is an apocalyptic number.

22722211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22722211 is an equidigital number, since it uses as much as digits as its factorization.

22722211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 224, while the sum is 19.

The square root of 22722211 is about 4766.7820382308. The cubic root of 22722211 is about 283.2371372013.

Adding to 22722211 its reverse (11222722), we get a palindrome (33944933).

The spelling of 22722211 in words is "twenty-two million, seven hundred twenty-two thousand, two hundred eleven".