1322111213 has 2 divisors, whose sum is σ = 1322111214. Its totient is φ = 1322111212.

The previous prime is 1322111191. The next prime is 1322111227. The reversal of 1322111213 is 3121112231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 806730409 + 515380804 = 28403^2 + 22702^2 .

It is a cyclic number.

It is not a de Polignac number, because 1322111213 - 2¹⁰ = 1322110189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1322111191 and 1322111200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1322111243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661055606 + 661055607.

It is an arithmetic number, because the mean of its divisors is an integer number (661055607).

Almost surely, 2^1322111213 is an apocalyptic number.

It is an amenable number.

1322111213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1322111213 is an equidigital number, since it uses as much as digits as its factorization.

1322111213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 17.

The square root of 1322111213 is about 36360.8472536051. The cubic root of 1322111213 is about 1097.5458269963.

Adding to 1322111213 its reverse (3121112231), we get a palindrome (4443223444).

The spelling of 1322111213 in words is "one billion, three hundred twenty-two million, one hundred eleven thousand, two hundred thirteen".