11331123221291 has 2 divisors, whose sum is σ = 11331123221292. Its totient is φ = 11331123221290.

The previous prime is 11331123221273. The next prime is 11331123221293. The reversal of 11331123221291 is 19212232113311.

It is a happy number.

11331123221291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11331123221291 - 2¹⁰ = 11331123220267 is a prime.

Together with 11331123221293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11331123221293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665561610645 + 5665561610646.

It is an arithmetic number, because the mean of its divisors is an integer number (5665561610646).

Almost surely, 2^{11331123221291} is an apocalyptic number.

11331123221291 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331123221291 is an equidigital number, since it uses as much as digits as its factorization.

11331123221291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The spelling of 11331123221291 in words is "eleven trillion, three hundred thirty-one billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred ninety-one".