7221141 has 24 divisors (see below), whose sum is σ = 11171160. Its totient is φ = 4478976.

The previous prime is 7221131. The next prime is 7221143. The reversal of 7221141 is 1411227.

It can be written as a sum of positive squares in 4 ways, for example, as 1199025 + 6022116 = 1095^2 + 2454^2 .

It is not a de Polignac number, because 7221141 - 2⁶ = 7221077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16461 + ... + 16893.

It is an arithmetic number, because the mean of its divisors is an integer number (465465).

Almost surely, 2^7221141 is an apocalyptic number.

It is an amenable number.

7221141 is a deficient number, since it is larger than the sum of its proper divisors (3950019).

7221141 is a wasteful number, since it uses less digits than its factorization.

7221141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 562 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 7221141 is about 2687.2180782363. The cubic root of 7221141 is about 193.2866867909.

Adding to 7221141 its reverse (1411227), we get a palindrome (8632368).

The spelling of 7221141 in words is "seven million, two hundred twenty-one thousand, one hundred forty-one".