1121443331 has 2 divisors, whose sum is σ = 1121443332. Its totient is φ = 1121443330.

The previous prime is 1121443313. The next prime is 1121443391. The reversal of 1121443331 is 1333441211.

Together with previous prime (1121443313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121443331 - 2¹⁰ = 1121442307 is a prime.

It is a super-2 number, since 2×1121443331² = 2515270289288751122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121443297 and 1121443306.

It is not a weakly prime, because it can be changed into another prime (1121443391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560721665 + 560721666.

It is an arithmetic number, because the mean of its divisors is an integer number (560721666).

Almost surely, 2^1121443331 is an apocalyptic number.

1121443331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121443331 is an equidigital number, since it uses as much as digits as its factorization.

1121443331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1121443331 is about 33487.9579998542. The cubic root of 1121443331 is about 1038.9447293377.

Adding to 1121443331 its reverse (1333441211), we get a palindrome (2454884542).

It can be divided in two parts, 11214 and 43331, that added together give a palindrome (54545).

The spelling of 1121443331 in words is "one billion, one hundred twenty-one million, four hundred forty-three thousand, three hundred thirty-one".