15121113 has 8 divisors (see below), whose sum is σ = 23041728. Its totient is φ = 8640624.

The previous prime is 15121111. The next prime is 15121157. The reversal of 15121113 is 31112151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15121113 - 2¹ = 15121111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15121092 and 15121101.

It is not an unprimeable number, because it can be changed into a prime (15121111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360006 + ... + 360047.

It is an arithmetic number, because the mean of its divisors is an integer number (2880216).

Almost surely, 2^15121113 is an apocalyptic number.

It is an amenable number.

15121113 is a deficient number, since it is larger than the sum of its proper divisors (7920615).

15121113 is an equidigital number, since it uses as much as digits as its factorization.

15121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720063.

The product of its digits is 30, while the sum is 15.

The square root of 15121113 is about 3888.5875327682. The cubic root of 15121113 is about 247.2831852874.

Adding to 15121113 its reverse (31112151), we get a palindrome (46233264).

The spelling of 15121113 in words is "fifteen million, one hundred twenty-one thousand, one hundred thirteen".