7221430441 has 3 divisors (see below), whose sum is σ = 7221515421. Its totient is φ = 7221345462.

The previous prime is 7221430423. The next prime is 7221430507. The reversal of 7221430441 is 1440341227.

The square root of 7221430441 is 84979.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 7221430441 - 2¹⁷ = 7221299369 is a prime.

It is a super-2 number, since 2×7221430441² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7221430421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 42490 + ... + 127468.

It is an arithmetic number, because the mean of its divisors is an integer number (2407171807).

Almost surely, 2^7221430441 is an apocalyptic number.

7221430441 is the 84979-th square number.

7221430441 is the 42490-th centered octagonal number.

It is an amenable number.

7221430441 is a deficient number, since it is larger than the sum of its proper divisors (84980).

7221430441 is an frugal number, since it uses more digits than its factorization.

7221430441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169958 (or 84979 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The cubic root of 7221430441 is about 1932.8926922418.

Adding to 7221430441 its reverse (1440341227), we get a palindrome (8661771668).

The spelling of 7221430441 in words is "seven billion, two hundred twenty-one million, four hundred thirty thousand, four hundred forty-one".