8121223 has 16 divisors (see below), whose sum is σ = 9478944. Its totient is φ = 6876160.

The previous prime is 8121209. The next prime is 8121283. The reversal of 8121223 is 3221218.

It is not a de Polignac number, because 8121223 - 2⁹ = 8120711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8121223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8121283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25461 + ... + 25777.

It is an arithmetic number, because the mean of its divisors is an integer number (592434).

Almost surely, 2^8121223 is an apocalyptic number.

8121223 is a deficient number, since it is larger than the sum of its proper divisors (1357721).

8121223 is a wasteful number, since it uses less digits than its factorization.

8121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482.

The product of its digits is 192, while the sum is 19.

The square root of 8121223 is about 2849.7759561060. The cubic root of 8121223 is about 201.0051317552.

The spelling of 8121223 in words is "eight million, one hundred twenty-one thousand, two hundred twenty-three".