1215110241 has 20 divisors (see below), whose sum is σ = 1921941252. Its totient is φ = 762421248.

The previous prime is 1215110201. The next prime is 1215110257. The reversal of 1215110241 is 1420115121.

It can be written as a sum of positive squares in 2 ways, for example, as 1024256016 + 190854225 = 32004^2 + 13815^2 .

It is not a de Polignac number, because 1215110241 - 2⁹ = 1215109729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1215110201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 439840 + ... + 442593.

Almost surely, 2^1215110241 is an apocalyptic number.

It is an amenable number.

1215110241 is a deficient number, since it is larger than the sum of its proper divisors (706831011).

1215110241 is an equidigital number, since it uses as much as digits as its factorization.

1215110241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882462 (or 882453 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1215110241 is about 34858.4314190986. The cubic root of 1215110241 is about 1067.1002632496.

Adding to 1215110241 its reverse (1420115121), we get a palindrome (2635225362).

The spelling of 1215110241 in words is "one billion, two hundred fifteen million, one hundred ten thousand, two hundred forty-one".