2221140305 has 8 divisors (see below), whose sum is σ = 2757277800. Its totient is φ = 1715639296.

The previous prime is 2221140283. The next prime is 2221140319. The reversal of 2221140305 is 5030411222.

It can be written as a sum of positive squares in 4 ways, for example, as 627853249 + 1593287056 = 25057^2 + 39916^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221140305 is a prime.

It is a Curzon 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, 7658960 + ... + 7659249.

It is an arithmetic number, because the mean of its divisors is an integer number (344659725).

Almost surely, 2^2221140305 is an apocalyptic number.

It is an amenable number.

2221140305 is a deficient number, since it is larger than the sum of its proper divisors (536137495).

2221140305 is a wasteful number, since it uses less digits than its factorization.

2221140305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15318243.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2221140305 is about 47128.9752169512. The cubic root of 2221140305 is about 1304.7440678752.

Adding to 2221140305 its reverse (5030411222), we get a palindrome (7251551527).

The spelling of 2221140305 in words is "two billion, two hundred twenty-one million, one hundred forty thousand, three hundred five".