1121107243 has 2 divisors, whose sum is σ = 1121107244. Its totient is φ = 1121107242.

The previous prime is 1121107231. The next prime is 1121107277. The reversal of 1121107243 is 3427011211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121107243 is a prime.

It is a super-2 number, since 2×1121107243² = 2513762900614122098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121107213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560553621 + 560553622.

It is an arithmetic number, because the mean of its divisors is an integer number (560553622).

Almost surely, 2^1121107243 is an apocalyptic number.

1121107243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121107243 is an equidigital number, since it uses as much as digits as its factorization.

1121107243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 1121107243 is about 33482.9395812255. The cubic root of 1121107243 is about 1038.8409310348.

Adding to 1121107243 its reverse (3427011211), we get a palindrome (4548118454).

The spelling of 1121107243 in words is "one billion, one hundred twenty-one million, one hundred seven thousand, two hundred forty-three".