1113515121 has 16 divisors (see below), whose sum is σ = 1572795200. Its totient is φ = 698787648.

The previous prime is 1113515099. The next prime is 1113515129. The reversal of 1113515121 is 1215153111.

It is not a de Polignac number, because 1113515121 - 2⁷ = 1113514993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113515129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53266 + ... + 71163.

It is an arithmetic number, because the mean of its divisors is an integer number (98299700).

Almost surely, 2^1113515121 is an apocalyptic number.

It is an amenable number.

1113515121 is a deficient number, since it is larger than the sum of its proper divisors (459280079).

1113515121 is a wasteful number, since it uses less digits than its factorization.

1113515121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124608.

The product of its digits is 150, while the sum is 21.

The square root of 1113515121 is about 33369.3739977243. The cubic root of 1113515121 is about 1036.4906123396.

Adding to 1113515121 its reverse (1215153111), we get a palindrome (2328668232).

The spelling of 1113515121 in words is "one billion, one hundred thirteen million, five hundred fifteen thousand, one hundred twenty-one".