2043434221 has 16 divisors (see below), whose sum is σ = 2240501040. Its totient is φ = 1855042560.

The previous prime is 2043434209. The next prime is 2043434243. The reversal of 2043434221 is 1224343402.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 141253225 + 1902180996 = 11885^2 + 43614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043434221 - 2⁷ = 2043434093 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 (2043434291) 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, 797875 + ... + 800431.

It is an arithmetic number, because the mean of its divisors is an integer number (140031315).

Almost surely, 2^2043434221 is an apocalyptic number.

It is an amenable number.

2043434221 is a deficient number, since it is larger than the sum of its proper divisors (197066819).

2043434221 is a wasteful number, since it uses less digits than its factorization.

2043434221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2043434221 is about 45204.3606414248. The cubic root of 2043434221 is about 1268.9764255518.

Adding to 2043434221 its reverse (1224343402), we get a palindrome (3267777623).

The spelling of 2043434221 in words is "two billion, forty-three million, four hundred thirty-four thousand, two hundred twenty-one".