22211447 has 2 divisors, whose sum is σ = 22211448. Its totient is φ = 22211446.

The previous prime is 22211429. The next prime is 22211459. The reversal of 22211447 is 74411222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22211447 - 2¹⁶ = 22145911 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 (22211417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11105723 + 11105724.

It is an arithmetic number, because the mean of its divisors is an integer number (11105724).

Almost surely, 2^22211447 is an apocalyptic number.

22211447 is a deficient number, since it is larger than the sum of its proper divisors (1).

22211447 is an equidigital number, since it uses as much as digits as its factorization.

22211447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 23.

The square root of 22211447 is about 4712.9021844295. The cubic root of 22211447 is about 281.0987735487.

Adding to 22211447 its reverse (74411222), we get a palindrome (96622669).

The spelling of 22211447 in words is "twenty-two million, two hundred eleven thousand, four hundred forty-seven".