8229121 has 4 divisors (see below), whose sum is σ = 8284500. Its totient is φ = 8173744.

The previous prime is 8229107. The next prime is 8229131. The reversal of 8229121 is 1219228.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5456896 + 2772225 = 2336^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 8229121 - 2⁷ = 8228993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8229131) 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, 27466 + ... + 27763.

It is an arithmetic number, because the mean of its divisors is an integer number (2071125).

Almost surely, 2^8229121 is an apocalyptic number.

It is an amenable number.

8229121 is a deficient number, since it is larger than the sum of its proper divisors (55379).

8229121 is a wasteful number, since it uses less digits than its factorization.

8229121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55378.

The product of its digits is 576, while the sum is 25.

The square root of 8229121 is about 2868.6444533961. The cubic root of 8229121 is about 201.8913983427.

The spelling of 8229121 in words is "eight million, two hundred twenty-nine thousand, one hundred twenty-one".