8212115 has 4 divisors (see below), whose sum is σ = 9854544. Its totient is φ = 6569688.

The previous prime is 8212109. The next prime is 8212147. The reversal of 8212115 is 5112128.

It is a happy number.

8212115 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.

It is a cyclic number.

It is not a de Polignac number, because 8212115 - 2²⁰ = 7163539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 821207 + ... + 821216.

It is an arithmetic number, because the mean of its divisors is an integer number (2463636).

Almost surely, 2^8212115 is an apocalyptic number.

8212115 is a deficient number, since it is larger than the sum of its proper divisors (1642429).

8212115 is a wasteful number, since it uses less digits than its factorization.

8212115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642428.

The product of its digits is 160, while the sum is 20.

The square root of 8212115 is about 2865.6788026574. The cubic root of 8212115 is about 201.7522286416.

The spelling of 8212115 in words is "eight million, two hundred twelve thousand, one hundred fifteen".