11322122381 has 2 divisors, whose sum is σ = 11322122382. Its totient is φ = 11322122380.

The previous prime is 11322122309. The next prime is 11322122411. The reversal of 11322122381 is 18322122311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6608064100 + 4714058281 = 81290^2 + 68659^2 .

It is an emirp because it is prime and its reverse (18322122311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11322122381 - 2¹⁴ = 11322105997 is a prime.

It is a super-2 number, since 2×11322122381² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11322122381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11322122081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661061190 + 5661061191.

It is an arithmetic number, because the mean of its divisors is an integer number (5661061191).

Almost surely, 2^11322122381 is an apocalyptic number.

It is an amenable number.

11322122381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11322122381 is an equidigital number, since it uses as much as digits as its factorization.

11322122381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

Adding to 11322122381 its reverse (18322122311), we get a palindrome (29644244692).

The spelling of 11322122381 in words is "eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, three hundred eighty-one".