8121027199 has 4 divisors (see below), whose sum is σ = 8122531240. Its totient is φ = 8119523160.

The previous prime is 8121027163. The next prime is 8121027217. The reversal of 8121027199 is 9917201218.

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 8121027199 - 2¹¹ = 8121025151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121027149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 743892 + ... + 754729.

It is an arithmetic number, because the mean of its divisors is an integer number (2030632810).

Almost surely, 2^8121027199 is an apocalyptic number.

8121027199 is a deficient number, since it is larger than the sum of its proper divisors (1504041).

8121027199 is a wasteful number, since it uses less digits than its factorization.

8121027199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504040.

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 8121027199 is about 90116.7420571783. The cubic root of 8121027199 is about 2010.0351634484.

The spelling of 8121027199 in words is "eight billion, one hundred twenty-one million, twenty-seven thousand, one hundred ninety-nine".