11323222381 has 2 divisors, whose sum is σ = 11323222382. Its totient is φ = 11323222380.

The previous prime is 11323222333. The next prime is 11323222397. The reversal of 11323222381 is 18322232311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6294994281 + 5028228100 = 79341^2 + 70910^2 .

It is a cyclic number.

It is not a de Polignac number, because 11323222381 - 2⁹ = 11323221869 is a prime.

It is a super-2 number, since 2×11323222381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11323222321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661611190 + 5661611191.

It is an arithmetic number, because the mean of its divisors is an integer number (5661611191).

Almost surely, 2^11323222381 is an apocalyptic number.

It is an amenable number.

11323222381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11323222381 is an equidigital number, since it uses as much as digits as its factorization.

11323222381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

Adding to 11323222381 its reverse (18322232311), we get a palindrome (29645454692).

The spelling of 11323222381 in words is "eleven billion, three hundred twenty-three million, two hundred twenty-two thousand, three hundred eighty-one".