22149899 has 2 divisors, whose sum is σ = 22149900. Its totient is φ = 22149898.

The previous prime is 22149889. The next prime is 22149901. The reversal of 22149899 is 99894122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22149899 - 2²⁰ = 21101323 is a prime.

Together with 22149901, it forms a pair of twin primes.

It is a Chen prime.

It is a zygodrome in base 3.

It is not a weakly prime, because it can be changed into another prime (22149889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074949 + 11074950.

It is an arithmetic number, because the mean of its divisors is an integer number (11074950).

Almost surely, 2^22149899 is an apocalyptic number.

22149899 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149899 is an equidigital number, since it uses as much as digits as its factorization.

22149899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 22149899 is about 4706.3679201694. The cubic root of 22149899 is about 280.8388914498.

The spelling of 22149899 in words is "twenty-two million, one hundred forty-nine thousand, eight hundred ninety-nine".