222221047 has 2 divisors, whose sum is σ = 222221048. Its totient is φ = 222221046.

The previous prime is 222220993. The next prime is 222221063. The reversal of 222221047 is 740122222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222221047 - 2⁷ = 222220919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222221347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110523 + 111110524.

It is an arithmetic number, because the mean of its divisors is an integer number (111110524).

Almost surely, 2^222221047 is an apocalyptic number.

222221047 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221047 is an equidigital number, since it uses as much as digits as its factorization.

222221047 is an odious number, because the sum of its binary digits is odd.

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

The square root of 222221047 is about 14907.0804317948. The cubic root of 222221047 is about 605.7057965152.

Adding to 222221047 its reverse (740122222), we get a palindrome (962343269).

The spelling of 222221047 in words is "two hundred twenty-two million, two hundred twenty-one thousand, forty-seven".