7221143522 has 32 divisors (see below), whose sum is σ = 11146161600. Its totient is φ = 3507520320.

The previous prime is 7221143453. The next prime is 7221143551. The reversal of 7221143522 is 2253411227.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3439229 + ... + 3441327.

It is an arithmetic number, because the mean of its divisors is an integer number (348317550).

Almost surely, 2^7221143522 is an apocalyptic number.

7221143522 is a deficient number, since it is larger than the sum of its proper divisors (3925018078).

7221143522 is a wasteful number, since it uses less digits than its factorization.

7221143522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498.

The product of its digits is 6720, while the sum is 29.

The square root of 7221143522 is about 84977.3118073289. The cubic root of 7221143522 is about 1932.8670929284.

Adding to 7221143522 its reverse (2253411227), we get a palindrome (9474554749).

The spelling of 7221143522 in words is "seven billion, two hundred twenty-one million, one hundred forty-three thousand, five hundred twenty-two".