1121311441 has 2 divisors, whose sum is σ = 1121311442. Its totient is φ = 1121311440.

The previous prime is 1121311439. The next prime is 1121311507. The reversal of 1121311441 is 1441131211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1110289041 + 11022400 = 33321^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121311441 - 2¹ = 1121311439 is a prime.

Together with 1121311439, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1121311141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560655720 + 560655721.

It is an arithmetic number, because the mean of its divisors is an integer number (560655721).

Almost surely, 2^1121311441 is an apocalyptic number.

It is an amenable number.

1121311441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121311441 is an equidigital number, since it uses as much as digits as its factorization.

1121311441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 19.

The square root of 1121311441 is about 33485.9887266301. The cubic root of 1121311441 is about 1038.9039985555.

Adding to 1121311441 its reverse (1441131211), we get a palindrome (2562442652).

The spelling of 1121311441 in words is "one billion, one hundred twenty-one million, three hundred eleven thousand, four hundred forty-one".