1131022232321 has 2 divisors, whose sum is σ = 1131022232322. Its totient is φ = 1131022232320.

The previous prime is 1131022232297. The next prime is 1131022232323. The reversal of 1131022232321 is 1232322201311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612494064400 + 518528167921 = 782620^2 + 720089^2 .

It is an emirp because it is prime and its reverse (1232322201311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1131022232321 - 2⁶ = 1131022232257 is a prime.

It is a super-2 number, since 2×1131022232321² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 1131022232323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1131022232323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565511116160 + 565511116161.

It is an arithmetic number, because the mean of its divisors is an integer number (565511116161).

Almost surely, 2^{1131022232321} is an apocalyptic number.

It is an amenable number.

1131022232321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131022232321 is an equidigital number, since it uses as much as digits as its factorization.

1131022232321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1131022232321 its reverse (1232322201311), we get a palindrome (2363344433632).

The spelling of 1131022232321 in words is "one trillion, one hundred thirty-one billion, twenty-two million, two hundred thirty-two thousand, three hundred twenty-one".