22102247 has 2 divisors, whose sum is σ = 22102248. Its totient is φ = 22102246.

The previous prime is 22102237. The next prime is 22102253. The reversal of 22102247 is 74220122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22102247 - 2¹² = 22098151 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22102217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11051123 + 11051124.

It is an arithmetic number, because the mean of its divisors is an integer number (11051124).

Almost surely, 2^22102247 is an apocalyptic number.

22102247 is a deficient number, since it is larger than the sum of its proper divisors (1).

22102247 is an equidigital number, since it uses as much as digits as its factorization.

22102247 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22102247 is about 4701.3026918079. The cubic root of 22102247 is about 280.6373533880.

Adding to 22102247 its reverse (74220122), we get a palindrome (96322369).

The spelling of 22102247 in words is "twenty-two million, one hundred two thousand, two hundred forty-seven".