1111223332381 has 2 divisors, whose sum is σ = 1111223332382. Its totient is φ = 1111223332380.

The previous prime is 1111223332363. The next prime is 1111223332403. The reversal of 1111223332381 is 1832333221111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563573011225 + 547650321156 = 750715^2 + 740034^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111223332381 - 2¹⁹ = 1111222808093 is a prime.

It is a super-2 number, since 2×1111223332381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111223392381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555611666190 + 555611666191.

It is an arithmetic number, because the mean of its divisors is an integer number (555611666191).

Almost surely, 2^{1111223332381} is an apocalyptic number.

It is an amenable number.

1111223332381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111223332381 is an equidigital number, since it uses as much as digits as its factorization.

1111223332381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 31.

Adding to 1111223332381 its reverse (1832333221111), we get a palindrome (2943556553492).

The spelling of 1111223332381 in words is "one trillion, one hundred eleven billion, two hundred twenty-three million, three hundred thirty-two thousand, three hundred eighty-one".