22122427 has 2 divisors, whose sum is σ = 22122428. Its totient is φ = 22122426.

The previous prime is 22122421. The next prime is 22122461. The reversal of 22122427 is 72422122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22122427 - 2⁷ = 22122299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122398 and 22122407.

It is not a weakly prime, because it can be changed into another prime (22122421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061213 + 11061214.

It is an arithmetic number, because the mean of its divisors is an integer number (11061214).

Almost surely, 2^22122427 is an apocalyptic number.

22122427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122427 is an equidigital number, since it uses as much as digits as its factorization.

22122427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 22.

The square root of 22122427 is about 4703.4484157903. The cubic root of 22122427 is about 280.7227374531.

Adding to 22122427 its reverse (72422122), we get a palindrome (94544549).

The spelling of 22122427 in words is "twenty-two million, one hundred twenty-two thousand, four hundred twenty-seven".