7110221 has 8 divisors (see below), whose sum is σ = 7272600. Its totient is φ = 6949440.

The previous prime is 7110217. The next prime is 7110239. The reversal of 7110221 is 1220117.

7110221 = 1885² + 1886².

It can be written as a sum of positive squares in 4 ways, for example, as 1755625 + 5354596 = 1325^2 + 2314^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7110221 - 2² = 7110217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7110196 and 7110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7113221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13715 + ... + 14223.

It is an arithmetic number, because the mean of its divisors is an integer number (909075).

Almost surely, 2^7110221 is an apocalyptic number.

7110221 is the 1886-th centered square number.

It is an amenable number.

7110221 is a deficient number, since it is larger than the sum of its proper divisors (162379).

7110221 is a wasteful number, since it uses less digits than its factorization.

7110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 7110221 is about 2666.4997656103. The cubic root of 7110221 is about 192.2919188581.

Adding to 7110221 its reverse (1220117), we get a palindrome (8330338).

The spelling of 7110221 in words is "seven million, one hundred ten thousand, two hundred twenty-one".