1213311227 has 2 divisors, whose sum is σ = 1213311228. Its totient is φ = 1213311226.

The previous prime is 1213311217. The next prime is 1213311247. The reversal of 1213311227 is 7221133121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7221133121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213311227 - 2¹⁴ = 1213294843 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213311217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606655613 + 606655614.

It is an arithmetic number, because the mean of its divisors is an integer number (606655614).

Almost surely, 2^1213311227 is an apocalyptic number.

1213311227 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213311227 is an equidigital number, since it uses as much as digits as its factorization.

1213311227 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 1213311227 is about 34832.6172861013. The cubic root of 1213311227 is about 1066.5733764874.

Adding to 1213311227 its reverse (7221133121), we get a palindrome (8434444348).

The spelling of 1213311227 in words is "one billion, two hundred thirteen million, three hundred eleven thousand, two hundred twenty-seven".