22421863 has 2 divisors, whose sum is σ = 22421864. Its totient is φ = 22421862.

The previous prime is 22421857. The next prime is 22421873. The reversal of 22421863 is 36812422.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22421863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22421813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210931 + 11210932.

It is an arithmetic number, because the mean of its divisors is an integer number (11210932).

Almost surely, 2^22421863 is an apocalyptic number.

22421863 is a deficient number, since it is larger than the sum of its proper divisors (1).

22421863 is an equidigital number, since it uses as much as digits as its factorization.

22421863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 28.

The square root of 22421863 is about 4735.1729641060. The cubic root of 22421863 is about 281.9836308256.

The spelling of 22421863 in words is "twenty-two million, four hundred twenty-one thousand, eight hundred sixty-three".