1223210447 has 2 divisors, whose sum is σ = 1223210448. Its totient is φ = 1223210446.

The previous prime is 1223210419. The next prime is 1223210473. The reversal of 1223210447 is 7440123221.

It is an a-pointer prime, because the next prime (1223210473) can be obtained adding 1223210447 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223210447 - 2⁶ = 1223210383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223210347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611605223 + 611605224.

It is an arithmetic number, because the mean of its divisors is an integer number (611605224).

Almost surely, 2^1223210447 is an apocalyptic number.

1223210447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223210447 is an equidigital number, since it uses as much as digits as its factorization.

1223210447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1223210447 is about 34974.4256135823. The cubic root of 1223210447 is about 1069.4661928152.

Adding to 1223210447 its reverse (7440123221), we get a palindrome (8663333668).

The spelling of 1223210447 in words is "one billion, two hundred twenty-three million, two hundred ten thousand, four hundred forty-seven".