1213441211 has 2 divisors, whose sum is σ = 1213441212. Its totient is φ = 1213441210.

The previous prime is 1213441189. The next prime is 1213441223. The reversal of 1213441211 is 1121443121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1213441211 - 2¹⁸ = 1213179067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213441231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606720605 + 606720606.

It is an arithmetic number, because the mean of its divisors is an integer number (606720606).

Almost surely, 2^1213441211 is an apocalyptic number.

1213441211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213441211 is an equidigital number, since it uses as much as digits as its factorization.

1213441211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 20.

The square root of 1213441211 is about 34834.4830735293. The cubic root of 1213441211 is about 1066.6114630393.

Adding to 1213441211 its reverse (1121443121), we get a palindrome (2334884332).

The spelling of 1213441211 in words is "one billion, two hundred thirteen million, four hundred forty-one thousand, two hundred eleven".