7221167 has 4 divisors (see below), whose sum is σ = 7232976. Its totient is φ = 7209360.

The previous prime is 7221163. The next prime is 7221169. The reversal of 7221167 is 7611227.

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

It is a cyclic number.

It is not a de Polignac number, because 7221167 - 2² = 7221163 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221161) 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, 4934 + ... + 6227.

It is an arithmetic number, because the mean of its divisors is an integer number (1808244).

Almost surely, 2^7221167 is an apocalyptic number.

7221167 is a deficient number, since it is larger than the sum of its proper divisors (11809).

7221167 is a wasteful number, since it uses less digits than its factorization.

7221167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11808.

The product of its digits is 1176, while the sum is 26.

The square root of 7221167 is about 2687.2229159487. Note that the first 3 decimals coincide. The cubic root of 7221167 is about 193.2869187694.

The spelling of 7221167 in words is "seven million, two hundred twenty-one thousand, one hundred sixty-seven".