22192091 has 2 divisors, whose sum is σ = 22192092. Its totient is φ = 22192090.

The previous prime is 22192087. The next prime is 22192097. The reversal of 22192091 is 19029122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22192091 - 2² = 22192087 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22192091.

It is not a weakly prime, because it can be changed into another prime (22192097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11096045 + 11096046.

It is an arithmetic number, because the mean of its divisors is an integer number (11096046).

Almost surely, 2^22192091 is an apocalyptic number.

22192091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22192091 is an equidigital number, since it uses as much as digits as its factorization.

22192091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 22192091 is about 4710.8482251077. The cubic root of 22192091 is about 281.0170960078.

The spelling of 22192091 in words is "twenty-two million, one hundred ninety-two thousand, ninety-one".