22638211 has 2 divisors, whose sum is σ = 22638212. Its totient is φ = 22638210.

The previous prime is 22638199. The next prime is 22638227. The reversal of 22638211 is 11283622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22638211 - 2¹³ = 22630019 is a prime.

It is not a weakly prime, because it can be changed into another prime (22638281) 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, 11319105 + 11319106.

It is an arithmetic number, because the mean of its divisors is an integer number (11319106).

Almost surely, 2^22638211 is an apocalyptic number.

22638211 is a deficient number, since it is larger than the sum of its proper divisors (1).

22638211 is an equidigital number, since it uses as much as digits as its factorization.

22638211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 22638211 is about 4757.9629044371. The cubic root of 22638211 is about 282.8876803335.

The spelling of 22638211 in words is "twenty-two million, six hundred thirty-eight thousand, two hundred eleven".