8221019 has 8 divisors (see below), whose sum is σ = 8436960. Its totient is φ = 8008000.

The previous prime is 8221009. The next prime is 8221021. The reversal of 8221019 is 9101228.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8221019 is a prime.

It is a super-2 number, since 2×8221019² = 135170306796722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8220985 and 8221003.

It is not an unprimeable number, because it can be changed into a prime (8221009) 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, 5669 + ... + 6969.

It is an arithmetic number, because the mean of its divisors is an integer number (1054620).

Almost surely, 2^8221019 is an apocalyptic number.

8221019 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

8221019 is a deficient number, since it is larger than the sum of its proper divisors (215941).

8221019 is a wasteful number, since it uses less digits than its factorization.

8221019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 8221019 is about 2867.2319403913. The cubic root of 8221019 is about 201.8251190393.

The spelling of 8221019 in words is "eight million, two hundred twenty-one thousand, nineteen".