2043144221 has 8 divisors (see below), whose sum is σ = 2142553080. Its totient is φ = 1945665792.

The previous prime is 2043144203. The next prime is 2043144239. The reversal of 2043144221 is 1224413402.

It is an interprime number because it is at equal distance from previous prime (2043144203) and next prime (2043144239).

It can be written as a sum of positive squares in 4 ways, for example, as 72760900 + 1970383321 = 8530^2 + 44389^2 .

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-2043144221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043144421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480440 + ... + 484673.

It is an arithmetic number, because the mean of its divisors is an integer number (267819135).

Almost surely, 2^2043144221 is an apocalyptic number.

It is an amenable number.

2043144221 is a deficient number, since it is larger than the sum of its proper divisors (99408859).

2043144221 is an equidigital number, since it uses as much as digits as its factorization.

2043144221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965215.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2043144221 is about 45201.1528724655. The cubic root of 2043144221 is about 1268.9163925333.

Adding to 2043144221 its reverse (1224413402), we get a palindrome (3267557623).

The spelling of 2043144221 in words is "two billion, forty-three million, one hundred forty-four thousand, two hundred twenty-one".