22099999 has 2 divisors, whose sum is σ = 22100000. Its totient is φ = 22099998.

The previous prime is 22099997. The next prime is 22100041. The reversal of 22099999 is 99999022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22099999 - 2¹ = 22099997 is a prime.

Together with 22099997, it forms a pair of twin primes.

22099999 is a modest number, since divided by 9999 gives 2209 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22099997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11049999 + 11050000.

It is an arithmetic number, because the mean of its divisors is an integer number (11050000).

Almost surely, 2^22099999 is an apocalyptic number.

22099999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22099999 is an equidigital number, since it uses as much as digits as its factorization.

22099999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 236196, while the sum is 49.

The square root of 22099999 is about 4701.0636030584. The cubic root of 22099999 is about 280.6278386063.

The spelling of 22099999 in words is "twenty-two million, ninety-nine thousand, nine hundred ninety-nine".