1121516015 has 16 divisors (see below), whose sum is σ = 1379209728. Its totient is φ = 875213856.

The previous prime is 1121515957. The next prime is 1121516017. The reversal of 1121516015 is 5106151211.

It is a cyclic number.

It is not a de Polignac number, because 1121516015 - 2¹⁰ = 1121514991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121516017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18254 + ... + 50756.

It is an arithmetic number, because the mean of its divisors is an integer number (86200608).

Almost surely, 2^1121516015 is an apocalyptic number.

1121516015 is a deficient number, since it is larger than the sum of its proper divisors (257693713).

1121516015 is a wasteful number, since it uses less digits than its factorization.

1121516015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32678.

The product of its (nonzero) digits is 300, while the sum is 23.

The square root of 1121516015 is about 33489.0432081897. The cubic root of 1121516015 is about 1038.9671745282.

Adding to 1121516015 its reverse (5106151211), we get a palindrome (6227667226).

The spelling of 1121516015 in words is "one billion, one hundred twenty-one million, five hundred sixteen thousand, fifteen".