11120815 has 8 divisors (see below), whose sum is σ = 13392288. Its totient is φ = 8865120.

The previous prime is 11120803. The next prime is 11120843. The reversal of 11120815 is 51802111.

It is a happy number.

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

It is not a de Polignac number, because 11120815 - 2⁵ = 11120783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11120792 and 11120801.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2331 + ... + 5260.

It is an arithmetic number, because the mean of its divisors is an integer number (1674036).

Almost surely, 2^11120815 is an apocalyptic number.

11120815 is a deficient number, since it is larger than the sum of its proper divisors (2271473).

11120815 is an equidigital number, since it uses as much as digits as its factorization.

11120815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 11120815 is about 3334.7885989969. The cubic root of 11120815 is about 223.2092588216.

Adding to 11120815 its reverse (51802111), we get a palindrome (62922926).

It can be divided in two parts, 11120 and 815, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 11120815 in words is "eleven million, one hundred twenty thousand, eight hundred fifteen".