2221447 has 2 divisors, whose sum is σ = 2221448. Its totient is φ = 2221446.

The previous prime is 2221433. The next prime is 2221459. The reversal of 2221447 is 7441222.

It is a happy number.

2221447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221447 - 2¹⁵ = 2188679 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 (2221847) 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, 1110723 + 1110724.

It is an arithmetic number, because the mean of its divisors is an integer number (1110724).

2^2221447 is an apocalyptic number.

2221447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221447 is an equidigital number, since it uses as much as digits as its factorization.

2221447 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 2221447 is about 1490.4519448811. The cubic root of 2221447 is about 130.4804118121.

Adding to 2221447 its reverse (7441222), we get a palindrome (9662669).

The spelling of 2221447 in words is "two million, two hundred twenty-one thousand, four hundred forty-seven".