7221144423 has 16 divisors (see below), whose sum is σ = 10069228800. Its totient is φ = 4594512384.

The previous prime is 7221144421. The next prime is 7221144457. The reversal of 7221144423 is 3244411227.

It is not a de Polignac number, because 7221144423 - 2¹ = 7221144421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7221144421) 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, 85561 + ... + 147522.

It is an arithmetic number, because the mean of its divisors is an integer number (629326800).

Almost surely, 2^7221144423 is an apocalyptic number.

7221144423 is a deficient number, since it is larger than the sum of its proper divisors (2848084377).

7221144423 is a wasteful number, since it uses less digits than its factorization.

7221144423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233558.

The product of its digits is 10752, while the sum is 30.

The square root of 7221144423 is about 84977.3171087438. The cubic root of 7221144423 is about 1932.8671733180.

The spelling of 7221144423 in words is "seven billion, two hundred twenty-one million, one hundred forty-four thousand, four hundred twenty-three".