8213222 has 8 divisors (see below), whose sum is σ = 12369672. Its totient is φ = 4090000.

The previous prime is 8213221. The next prime is 8213267. The reversal of 8213222 is 2223128.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8213194 and 8213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7679 + ... + 8682.

It is an arithmetic number, because the mean of its divisors is an integer number (1546209).

Almost surely, 2^8213222 is an apocalyptic number.

8213222 is a deficient number, since it is larger than the sum of its proper divisors (4156450).

8213222 is a wasteful number, since it uses less digits than its factorization.

8213222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16614.

The product of its digits is 384, while the sum is 20.

The square root of 8213222 is about 2865.8719441036. The cubic root of 8213222 is about 201.7612936909.

The spelling of 8213222 in words is "eight million, two hundred thirteen thousand, two hundred twenty-two".