8115121 has 4 divisors (see below), whose sum is σ = 9274432. Its totient is φ = 6955812.

The previous prime is 8115119. The next prime is 8115131. The reversal of 8115121 is 1215118.

It is a happy number.

8115121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8115121 - 2¹ = 8115119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8115101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579645 + ... + 579658.

It is an arithmetic number, because the mean of its divisors is an integer number (2318608).

Almost surely, 2^8115121 is an apocalyptic number.

It is an amenable number.

8115121 is a deficient number, since it is larger than the sum of its proper divisors (1159311).

8115121 is a wasteful number, since it uses less digits than its factorization.

8115121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159310.

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

The square root of 8115121 is about 2848.7051444472. The cubic root of 8115121 is about 200.9547764235.

The spelling of 8115121 in words is "eight million, one hundred fifteen thousand, one hundred twenty-one".