2331121133213 has 2 divisors, whose sum is σ = 2331121133214. Its totient is φ = 2331121133212.

The previous prime is 2331121133177. The next prime is 2331121133279. The reversal of 2331121133213 is 3123311211332.

2331121133213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1766884294564 + 564236838649 = 1329242^2 + 751157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2331121133213 is a prime.

It is a super-2 number, since 2×2331121133213² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2331121133293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165560566606 + 1165560566607.

It is an arithmetic number, because the mean of its divisors is an integer number (1165560566607).

Almost surely, 2^{2331121133213} is an apocalyptic number.

It is an amenable number.

2331121133213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331121133213 is an equidigital number, since it uses as much as digits as its factorization.

2331121133213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

Adding to 2331121133213 its reverse (3123311211332), we get a palindrome (5454432344545).

The spelling of 2331121133213 in words is "two trillion, three hundred thirty-one billion, one hundred twenty-one million, one hundred thirty-three thousand, two hundred thirteen".