22210427 has 2 divisors, whose sum is σ = 22210428. Its totient is φ = 22210426.

The previous prime is 22210421. The next prime is 22210451. The reversal of 22210427 is 72401222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22210427 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22210399 and 22210408.

It is not a weakly prime, because it can be changed into another prime (22210421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105213 + 11105214.

It is an arithmetic number, because the mean of its divisors is an integer number (11105214).

Almost surely, 2^22210427 is an apocalyptic number.

22210427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22210427 is an equidigital number, since it uses as much as digits as its factorization.

22210427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22210427 is about 4712.7939696108. The cubic root of 22210427 is about 281.0944705852.

Adding to 22210427 its reverse (72401222), we get a palindrome (94611649).

The spelling of 22210427 in words is "twenty-two million, two hundred ten thousand, four hundred twenty-seven".