2221444481 has 2 divisors, whose sum is σ = 2221444482. Its totient is φ = 2221444480.

The previous prime is 2221444403. The next prime is 2221444487. The reversal of 2221444481 is 1844441222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2215114225 + 6330256 = 47065^2 + 2516^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221444481 is a prime.

It is a super-2 number, since 2×2221444481² = 9869631164330718722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221444487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110722240 + 1110722241.

It is an arithmetic number, because the mean of its divisors is an integer number (1110722241).

Almost surely, 2^2221444481 is an apocalyptic number.

It is an amenable number.

2221444481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221444481 is an equidigital number, since it uses as much as digits as its factorization.

2221444481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16384, while the sum is 32.

The square root of 2221444481 is about 47132.2021658229. The cubic root of 2221444481 is about 1304.8036249287.

The spelling of 2221444481 in words is "two billion, two hundred twenty-one million, four hundred forty-four thousand, four hundred eighty-one".