11222113381 has 2 divisors, whose sum is σ = 11222113382. Its totient is φ = 11222113380.

The previous prime is 11222113373. The next prime is 11222113387. The reversal of 11222113381 is 18331122211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7662201156 + 3559912225 = 87534^2 + 59665^2 .

It is an emirp because it is prime and its reverse (18331122211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11222113381 - 2³ = 11222113373 is a prime.

It is a super-2 number, since 2×11222113381² (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 (11222113387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5611056690 + 5611056691.

It is an arithmetic number, because the mean of its divisors is an integer number (5611056691).

Almost surely, 2^11222113381 is an apocalyptic number.

It is an amenable number.

11222113381 is a deficient number, since it is larger than the sum of its proper divisors (1).

11222113381 is an equidigital number, since it uses as much as digits as its factorization.

11222113381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

Adding to 11222113381 its reverse (18331122211), we get a palindrome (29553235592).

The spelling of 11222113381 in words is "eleven billion, two hundred twenty-two million, one hundred thirteen thousand, three hundred eighty-one".