22123807 has 2 divisors, whose sum is σ = 22123808. Its totient is φ = 22123806.

The previous prime is 22123799. The next prime is 22123819. The reversal of 22123807 is 70832122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22123807 - 2³ = 22123799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22123837) 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, 11061903 + 11061904.

It is an arithmetic number, because the mean of its divisors is an integer number (11061904).

Almost surely, 2^22123807 is an apocalyptic number.

22123807 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123807 is an equidigital number, since it uses as much as digits as its factorization.

22123807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 22123807 is about 4703.5951143779. The cubic root of 22123807 is about 280.7285745059.

Adding to 22123807 its reverse (70832122), we get a palindrome (92955929).

The spelling of 22123807 in words is "twenty-two million, one hundred twenty-three thousand, eight hundred seven".