22242427 has 2 divisors, whose sum is σ = 22242428. Its totient is φ = 22242426.

The previous prime is 22242419. The next prime is 22242433. The reversal of 22242427 is 72424222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22242427 - 2³ = 22242419 is a prime.

It is not a weakly prime, because it can be changed into another prime (22245427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11121213 + 11121214.

It is an arithmetic number, because the mean of its divisors is an integer number (11121214).

Almost surely, 2^22242427 is an apocalyptic number.

22242427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22242427 is an equidigital number, since it uses as much as digits as its factorization.

22242427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3584, while the sum is 25.

The square root of 22242427 is about 4716.1877613174. The cubic root of 22242427 is about 281.2294028044.

Adding to 22242427 its reverse (72424222), we get a palindrome (94666649).

The spelling of 22242427 in words is "twenty-two million, two hundred forty-two thousand, four hundred twenty-seven".