22033391 has 2 divisors, whose sum is σ = 22033392. Its totient is φ = 22033390.

The previous prime is 22033339. The next prime is 22033393. The reversal of 22033391 is 19333022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22033391 - 2⁶ = 22033327 is a prime.

Together with 22033393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22033393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11016695 + 11016696.

It is an arithmetic number, because the mean of its divisors is an integer number (11016696).

Almost surely, 2^22033391 is an apocalyptic number.

22033391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22033391 is an equidigital number, since it uses as much as digits as its factorization.

22033391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 22033391 is about 4693.9739027822. The cubic root of 22033391 is about 280.3456233677.

The spelling of 22033391 in words is "twenty-two million, thirty-three thousand, three hundred ninety-one".