1121344453 has 2 divisors, whose sum is σ = 1121344454. Its totient is φ = 1121344452.

The previous prime is 1121344447. The next prime is 1121344457. The reversal of 1121344453 is 3544431211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 969512769 + 151831684 = 31137^2 + 12322^2 .

It is an emirp because it is prime and its reverse (3544431211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121344453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121344457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560672226 + 560672227.

It is an arithmetic number, because the mean of its divisors is an integer number (560672227).

Almost surely, 2^1121344453 is an apocalyptic number.

It is an amenable number.

1121344453 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121344453 is an equidigital number, since it uses as much as digits as its factorization.

1121344453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 1121344453 is about 33486.4816455835. The cubic root of 1121344453 is about 1038.9141937492.

Adding to 1121344453 its reverse (3544431211), we get a palindrome (4665775664).

The spelling of 1121344453 in words is "one billion, one hundred twenty-one million, three hundred forty-four thousand, four hundred fifty-three".