22681207 has 2 divisors, whose sum is σ = 22681208. Its totient is φ = 22681206.

The previous prime is 22681189. The next prime is 22681271. The reversal of 22681207 is 70218622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22681207 - 2¹¹ = 22679159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22681807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11340603 + 11340604.

It is an arithmetic number, because the mean of its divisors is an integer number (11340604).

Almost surely, 2^22681207 is an apocalyptic number.

22681207 is a deficient number, since it is larger than the sum of its proper divisors (1).

22681207 is an equidigital number, since it uses as much as digits as its factorization.

22681207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 22681207 is about 4762.4790813189. The cubic root of 22681207 is about 283.0666601202.

Adding to 22681207 its reverse (70218622), we get a palindrome (92899829).

The spelling of 22681207 in words is "twenty-two million, six hundred eighty-one thousand, two hundred seven".