8021229 has 8 divisors (see below), whose sum is σ = 11324160. Its totient is φ = 5032896.

The previous prime is 8021191. The next prime is 8021231. The reversal of 8021229 is 9221208.

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

It is not a de Polignac number, because 8021229 - 2¹¹ = 8019181 is a prime.

It is a super-2 number, since 2×8021229² = 128680229340882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8021199 and 8021208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8021239) 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, 78589 + ... + 78690.

It is an arithmetic number, because the mean of its divisors is an integer number (1415520).

Almost surely, 2^8021229 is an apocalyptic number.

It is an amenable number.

8021229 is a deficient number, since it is larger than the sum of its proper divisors (3302931).

8021229 is a wasteful number, since it uses less digits than its factorization.

8021229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157299.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 8021229 is about 2832.1774308825. The cubic root of 8021229 is about 200.1767520808.

The spelling of 8021229 in words is "eight million, twenty-one thousand, two hundred twenty-nine".