1121445515 has 16 divisors (see below), whose sum is σ = 1397109600. Its totient is φ = 863127552.

The previous prime is 1121445499. The next prime is 1121445517. The reversal of 1121445515 is 5155441211.

1121445515 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 1121445515 - 2⁴ = 1121445499 is a prime.

It is a super-2 number, since 2×1121445515² = 2515280086227230450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1121445517) 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 in 15 ways as a sum of consecutive naturals, for example, 27371 + ... + 54699.

It is an arithmetic number, because the mean of its divisors is an integer number (87319350).

Almost surely, 2^1121445515 is an apocalyptic number.

1121445515 is a deficient number, since it is larger than the sum of its proper divisors (275664085).

1121445515 is a wasteful number, since it uses less digits than its factorization.

1121445515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27646.

The product of its digits is 4000, while the sum is 29.

The square root of 1121445515 is about 33487.9906085749. The cubic root of 1121445515 is about 1038.9454037822.

Adding to 1121445515 its reverse (5155441211), we get a palindrome (6276886726).

The spelling of 1121445515 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, five hundred fifteen".