22091299 has 2 divisors, whose sum is σ = 22091300. Its totient is φ = 22091298.

The previous prime is 22091297. The next prime is 22091341. The reversal of 22091299 is 99219022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22091299 - 2¹ = 22091297 is a prime.

Together with 22091297, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22091291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11045649 + 11045650.

It is an arithmetic number, because the mean of its divisors is an integer number (11045650).

Almost surely, 2^22091299 is an apocalyptic number.

22091299 is a deficient number, since it is larger than the sum of its proper divisors (1).

22091299 is an equidigital number, since it uses as much as digits as its factorization.

22091299 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 22091299 is about 4700.1381894578. The cubic root of 22091299 is about 280.5910093039.

It can be divided in two parts, 220 and 91299, that added together give a palindrome (91519).

The spelling of 22091299 in words is "twenty-two million, ninety-one thousand, two hundred ninety-nine".