1243442412227 has 2 divisors, whose sum is σ = 1243442412228. Its totient is φ = 1243442412226.

The previous prime is 1243442412169. The next prime is 1243442412263. The reversal of 1243442412227 is 7222142443421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243442412227 - 2¹⁶ = 1243442346691 is a prime.

It is a super-2 number, since 2×1243442412227² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1243442442227) 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, 621721206113 + 621721206114.

It is an arithmetic number, because the mean of its divisors is an integer number (621721206114).

Almost surely, 2^{1243442412227} is an apocalyptic number.

1243442412227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243442412227 is an equidigital number, since it uses as much as digits as its factorization.

1243442412227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 38.

Adding to 1243442412227 its reverse (7222142443421), we get a palindrome (8465584855648).

The spelling of 1243442412227 in words is "one trillion, two hundred forty-three billion, four hundred forty-two million, four hundred twelve thousand, two hundred twenty-seven".