22140691 has 2 divisors, whose sum is σ = 22140692. Its totient is φ = 22140690.

The previous prime is 22140667. The next prime is 22140709. The reversal of 22140691 is 19604122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22140691 - 2¹¹ = 22138643 is a prime.

It is not a weakly prime, because it can be changed into another prime (22140631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11070345 + 11070346.

It is an arithmetic number, because the mean of its divisors is an integer number (11070346).

Almost surely, 2^22140691 is an apocalyptic number.

22140691 is a deficient number, since it is larger than the sum of its proper divisors (1).

22140691 is an equidigital number, since it uses as much as digits as its factorization.

22140691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 22140691 is about 4705.3895694193. The cubic root of 22140691 is about 280.7999699340.

The spelling of 22140691 in words is "twenty-two million, one hundred forty thousand, six hundred ninety-one".