8221015005999 has 8 divisors (see below), whose sum is σ = 10963990200240. Its totient is φ = 5479358241216.

The previous prime is 8221015005967. The next prime is 8221015006007. The reversal of 8221015005999 is 9995005101228.

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 8221015005999 - 2⁵ = 8221015005967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221015005799) 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, 329592814 + ... + 329617755.

It is an arithmetic number, because the mean of its divisors is an integer number (1370498775030).

Almost surely, 2^{8221015005999} is an apocalyptic number.

8221015005999 is a deficient number, since it is larger than the sum of its proper divisors (2742975194241).

8221015005999 is a wasteful number, since it uses less digits than its factorization.

8221015005999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659214729.

The product of its (nonzero) digits is 583200, while the sum is 51.

The spelling of 8221015005999 in words is "eight trillion, two hundred twenty-one billion, fifteen million, five thousand, nine hundred ninety-nine".