1121515012 has 12 divisors (see below), whose sum is σ = 1994826316. Its totient is φ = 551564640.

The previous prime is 1121515001. The next prime is 1121515027. The reversal of 1121515012 is 2105151211.

It can be written as a sum of positive squares in 2 ways, for example, as 123965956 + 997549056 = 11134^2 + 31584^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2297943 + ... + 2298430.

Almost surely, 2^1121515012 is an apocalyptic number.

It is an amenable number.

1121515012 is a deficient number, since it is larger than the sum of its proper divisors (873311304).

1121515012 is a wasteful number, since it uses less digits than its factorization.

1121515012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596438 (or 4596436 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 19.

The square root of 1121515012 is about 33489.0282331393. The cubic root of 1121515012 is about 1038.9668648032.

Adding to 1121515012 its reverse (2105151211), we get a palindrome (3226666223).

The spelling of 1121515012 in words is "one billion, one hundred twenty-one million, five hundred fifteen thousand, twelve".