22107391 has 2 divisors, whose sum is σ = 22107392. Its totient is φ = 22107390.

The previous prime is 22107383. The next prime is 22107401. The reversal of 22107391 is 19370122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22107391 - 2³ = 22107383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22107311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11053695 + 11053696.

It is an arithmetic number, because the mean of its divisors is an integer number (11053696).

Almost surely, 2^22107391 is an apocalyptic number.

22107391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22107391 is an equidigital number, since it uses as much as digits as its factorization.

22107391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 22107391 is about 4701.8497423886. The cubic root of 22107391 is about 280.6591232193.

The spelling of 22107391 in words is "twenty-two million, one hundred seven thousand, three hundred ninety-one".