1213211327 has 2 divisors, whose sum is σ = 1213211328. Its totient is φ = 1213211326.

The previous prime is 1213211323. The next prime is 1213211339. The reversal of 1213211327 is 7231123121.

It is a weak prime.

It is an emirp because it is prime and its reverse (7231123121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213211327 - 2² = 1213211323 is a prime.

It is a super-2 number, since 2×1213211327² = 2943763447922201858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213211323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606605663 + 606605664.

It is an arithmetic number, because the mean of its divisors is an integer number (606605664).

Almost surely, 2^1213211327 is an apocalyptic number.

1213211327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213211327 is an equidigital number, since it uses as much as digits as its factorization.

1213211327 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 1213211327 is about 34831.1832558126. The cubic root of 1213211327 is about 1066.5441029857.

Adding to 1213211327 its reverse (7231123121), we get a palindrome (8444334448).

The spelling of 1213211327 in words is "one billion, two hundred thirteen million, two hundred eleven thousand, three hundred twenty-seven".