7221327 has 16 divisors (see below), whose sum is σ = 10046592. Its totient is φ = 4609440.

The previous prime is 7221307. The next prime is 7221353. The reversal of 7221327 is 7231227.

It is not a de Polignac number, because 7221327 - 2⁷ = 7221199 is a prime.

7221327 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7221297 and 7221306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221307) 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, 6952 + ... + 7922.

It is an arithmetic number, because the mean of its divisors is an integer number (627912).

Almost surely, 2^7221327 is an apocalyptic number.

7221327 is a deficient number, since it is larger than the sum of its proper divisors (2825265).

7221327 is a wasteful number, since it uses less digits than its factorization.

7221327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its digits is 1176, while the sum is 24.

The square root of 7221327 is about 2687.2526862951. The cubic root of 7221327 is about 193.2883463170.

The spelling of 7221327 in words is "seven million, two hundred twenty-one thousand, three hundred twenty-seven".