8812221 has 8 divisors (see below), whose sum is σ = 12817824. Its totient is φ = 5340720.

The previous prime is 8812211. The next prime is 8812231. The reversal of 8812221 is 1222188.

8812221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8812211) and next prime (8812231).

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

It is a de Polignac number, because none of the positive numbers 2^k-8812221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8812191 and 8812200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8812211) 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, 133486 + ... + 133551.

It is an arithmetic number, because the mean of its divisors is an integer number (1602228).

Almost surely, 2^8812221 is an apocalyptic number.

It is an amenable number.

8812221 is a deficient number, since it is larger than the sum of its proper divisors (4005603).

8812221 is a wasteful number, since it uses less digits than its factorization.

8812221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267051.

The product of its digits is 512, while the sum is 24.

The square root of 8812221 is about 2968.5385293103. The cubic root of 8812221 is about 206.5515508176.

The spelling of 8812221 in words is "eight million, eight hundred twelve thousand, two hundred twenty-one".