11331122231213 has 2 divisors, whose sum is σ = 11331122231214. Its totient is φ = 11331122231212.

The previous prime is 11331122231203. The next prime is 11331122231281. The reversal of 11331122231213 is 31213222113311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9972540832489 + 1358581398724 = 3157933^2 + 1165582^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331122231213 - 2²⁶ = 11331055122349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11331122231203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665561115606 + 5665561115607.

It is an arithmetic number, because the mean of its divisors is an integer number (5665561115607).

Almost surely, 2^{11331122231213} is an apocalyptic number.

It is an amenable number.

11331122231213 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331122231213 is an equidigital number, since it uses as much as digits as its factorization.

11331122231213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

Adding to 11331122231213 its reverse (31213222113311), we get a palindrome (42544344344524).

The spelling of 11331122231213 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, two hundred thirteen".