1111333123213 has 2 divisors, whose sum is σ = 1111333123214. Its totient is φ = 1111333123212.

The previous prime is 1111333123163. The next prime is 1111333123249. The reversal of 1111333123213 is 3123213331111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 746224728649 + 365108394564 = 863843^2 + 604242^2 .

It is an emirp because it is prime and its reverse (3123213331111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111333123213 - 2²⁵ = 1111299568781 is a prime.

It is a super-2 number, since 2×1111333123213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111333153213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555666561606 + 555666561607.

It is an arithmetic number, because the mean of its divisors is an integer number (555666561607).

Almost surely, 2^{1111333123213} is an apocalyptic number.

It is an amenable number.

1111333123213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111333123213 is an equidigital number, since it uses as much as digits as its factorization.

1111333123213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 25.

Adding to 1111333123213 its reverse (3123213331111), we get a palindrome (4234546454324).

The spelling of 1111333123213 in words is "one trillion, one hundred eleven billion, three hundred thirty-three million, one hundred twenty-three thousand, two hundred thirteen".