11110331321 has 2 divisors, whose sum is σ = 11110331322. Its totient is φ = 11110331320.

The previous prime is 11110331233. The next prime is 11110331327. The reversal of 11110331321 is 12313301111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10294943296 + 815388025 = 101464^2 + 28555^2 .

It is an emirp because it is prime and its reverse (12313301111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11110331321 - 2²² = 11106137017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11110331321.

It is not a weakly prime, because it can be changed into another prime (11110331327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555165660 + 5555165661.

It is an arithmetic number, because the mean of its divisors is an integer number (5555165661).

Almost surely, 2^11110331321 is an apocalyptic number.

It is an amenable number.

11110331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110331321 is an equidigital number, since it uses as much as digits as its factorization.

11110331321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11110331321 its reverse (12313301111), we get a palindrome (23423632432).

The spelling of 11110331321 in words is "eleven billion, one hundred ten million, three hundred thirty-one thousand, three hundred twenty-one".