1222311047 has 2 divisors, whose sum is σ = 1222311048. Its totient is φ = 1222311046.

The previous prime is 1222311029. The next prime is 1222311049. The reversal of 1222311047 is 7401132221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1222311047 - 2¹⁶ = 1222245511 is a prime.

Together with 1222311049, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222311049) 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, 611155523 + 611155524.

It is an arithmetic number, because the mean of its divisors is an integer number (611155524).

Almost surely, 2^1222311047 is an apocalyptic number.

1222311047 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222311047 is an equidigital number, since it uses as much as digits as its factorization.

1222311047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1222311047 is about 34961.5652824641. The cubic root of 1222311047 is about 1069.2040101461.

Adding to 1222311047 its reverse (7401132221), we get a palindrome (8623443268).

The spelling of 1222311047 in words is "one billion, two hundred twenty-two million, three hundred eleven thousand, forty-seven".