22690211 has 2 divisors, whose sum is σ = 22690212. Its totient is φ = 22690210.

The previous prime is 22690207. The next prime is 22690229. The reversal of 22690211 is 11209622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22690211 - 2² = 22690207 is a prime.

It is not a weakly prime, because it can be changed into another prime (22690271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11345105 + 11345106.

It is an arithmetic number, because the mean of its divisors is an integer number (11345106).

Almost surely, 2^22690211 is an apocalyptic number.

22690211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22690211 is an equidigital number, since it uses as much as digits as its factorization.

22690211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 22690211 is about 4763.4242935099. The cubic root of 22690211 is about 283.1041124924.

Adding to 22690211 its reverse (11209622), we get a palindrome (33899833).

The spelling of 22690211 in words is "twenty-two million, six hundred ninety thousand, two hundred eleven".