22399211 has 2 divisors, whose sum is σ = 22399212. Its totient is φ = 22399210.

The previous prime is 22399187. The next prime is 22399249. The reversal of 22399211 is 11299322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22399211 - 2⁶ = 22399147 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22390211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11199605 + 11199606.

It is an arithmetic number, because the mean of its divisors is an integer number (11199606).

Almost surely, 2^22399211 is an apocalyptic number.

22399211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22399211 is an equidigital number, since it uses as much as digits as its factorization.

22399211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 29.

The square root of 22399211 is about 4732.7804724073. The cubic root of 22399211 is about 281.8886395302. Note that the first 3 decimals are identical.

The spelling of 22399211 in words is "twenty-two million, three hundred ninety-nine thousand, two hundred eleven".