33222191 has 2 divisors, whose sum is σ = 33222192. Its totient is φ = 33222190.

The previous prime is 33222181. The next prime is 33222223. The reversal of 33222191 is 19122233.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33222191 - 2¹⁴ = 33205807 is a prime.

It is a super-2 number, since 2×33222191² = 2207427949680962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33222121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611095 + 16611096.

It is an arithmetic number, because the mean of its divisors is an integer number (16611096).

Almost surely, 2^33222191 is an apocalyptic number.

33222191 is a deficient number, since it is larger than the sum of its proper divisors (1).

33222191 is an equidigital number, since it uses as much as digits as its factorization.

33222191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 33222191 is about 5763.8694468213. The cubic root of 33222191 is about 321.4717074431.

The spelling of 33222191 in words is "thirty-three million, two hundred twenty-two thousand, one hundred ninety-one".