22210091 has 2 divisors, whose sum is σ = 22210092. Its totient is φ = 22210090.

The previous prime is 22210073. The next prime is 22210103. The reversal of 22210091 is 19001222.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210091 is a prime.

It is a super-3 number, since 3×22210091³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is equal to p_1401605 and since 22210091 and 1401605 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22210051) 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, 11105045 + 11105046.

It is an arithmetic number, because the mean of its divisors is an integer number (11105046).

Almost surely, 2^22210091 is an apocalyptic number.

22210091 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210091 is an equidigital number, since it uses as much as digits as its factorization.

22210091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 22210091 is about 4712.7583218323. The cubic root of 22210091 is about 281.0930531096.

The spelling of 22210091 in words is "twenty-two million, two hundred ten thousand, ninety-one".