1121515441 has 2 divisors, whose sum is σ = 1121515442. Its totient is φ = 1121515440.

The previous prime is 1121515403. The next prime is 1121515529. The reversal of 1121515441 is 1445151211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1115827216 + 5688225 = 33404^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121515441 - 2⁹ = 1121514929 is a prime.

It is a super-3 number, since 3×1121515441³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1121515141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560757720 + 560757721.

It is an arithmetic number, because the mean of its divisors is an integer number (560757721).

Almost surely, 2^1121515441 is an apocalyptic number.

It is an amenable number.

1121515441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121515441 is an equidigital number, since it uses as much as digits as its factorization.

1121515441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 800, while the sum is 25.

The square root of 1121515441 is about 33489.0346382215. The cubic root of 1121515441 is about 1038.9669972778.

Adding to 1121515441 its reverse (1445151211), we get a palindrome (2566666652).

The spelling of 1121515441 in words is "one billion, one hundred twenty-one million, five hundred fifteen thousand, four hundred forty-one".