22100191 has 2 divisors, whose sum is σ = 22100192. Its totient is φ = 22100190.

The previous prime is 22100167. The next prime is 22100203. The reversal of 22100191 is 19100122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22100191 - 2¹¹ = 22098143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11050095 + 11050096.

It is an arithmetic number, because the mean of its divisors is an integer number (11050096).

Almost surely, 2^22100191 is an apocalyptic number.

22100191 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100191 is an equidigital number, since it uses as much as digits as its factorization.

22100191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 22100191 is about 4701.0840239247. The cubic root of 22100191 is about 280.6286512819.

The spelling of 22100191 in words is "twenty-two million, one hundred thousand, one hundred ninety-one".