1223442271 has 2 divisors, whose sum is σ = 1223442272. Its totient is φ = 1223442270.

The previous prime is 1223442257. The next prime is 1223442293. The reversal of 1223442271 is 1722443221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223442271 - 2¹¹ = 1223440223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223442371) 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, 611721135 + 611721136.

It is an arithmetic number, because the mean of its divisors is an integer number (611721136).

Almost surely, 2^1223442271 is an apocalyptic number.

1223442271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223442271 is an equidigital number, since it uses as much as digits as its factorization.

1223442271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 28.

The square root of 1223442271 is about 34977.7396496686. The cubic root of 1223442271 is about 1069.5337506287.

Adding to 1223442271 its reverse (1722443221), we get a palindrome (2945885492).

The spelling of 1223442271 in words is "one billion, two hundred twenty-three million, four hundred forty-two thousand, two hundred seventy-one".