7221144505 has 8 divisors (see below), whose sum is σ = 8666095752. Its totient is φ = 5776434048.

The previous prime is 7221144487. The next prime is 7221144521. The reversal of 7221144505 is 5054411227.

It can be written as a sum of positive squares in 4 ways, for example, as 1344542224 + 5876602281 = 36668^2 + 76659^2 .

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 7221144505 - 2⁵ = 7221144473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14127 + ... + 121003.

It is an arithmetic number, because the mean of its divisors is an integer number (1083261969).

Almost surely, 2^7221144505 is an apocalyptic number.

It is an amenable number.

7221144505 is a deficient number, since it is larger than the sum of its proper divisors (1444951247).

7221144505 is a wasteful number, since it uses less digits than its factorization.

7221144505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120395.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 7221144505 is about 84977.3175912255. The cubic root of 7221144505 is about 1932.8671806342.

The spelling of 7221144505 in words is "seven billion, two hundred twenty-one million, one hundred forty-four thousand, five hundred five".