22227391 has 2 divisors, whose sum is σ = 22227392. Its totient is φ = 22227390.

The previous prime is 22227383. The next prime is 22227409. The reversal of 22227391 is 19372222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22227391 - 2³ = 22227383 is a 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 (22227991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113695 + 11113696.

It is an arithmetic number, because the mean of its divisors is an integer number (11113696).

Almost surely, 2^22227391 is an apocalyptic number.

22227391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22227391 is an equidigital number, since it uses as much as digits as its factorization.

22227391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 22227391 is about 4714.5934077076. The cubic root of 22227391 is about 281.1660176576.

The spelling of 22227391 in words is "twenty-two million, two hundred twenty-seven thousand, three hundred ninety-one".