2043122221 has 4 divisors (see below), whose sum is σ = 2334996832. Its totient is φ = 1751247612.

The previous prime is 2043122201. The next prime is 2043122287. The reversal of 2043122221 is 1222213402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2043122221 - 2¹¹ = 2043120173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145937295 + ... + 145937308.

It is an arithmetic number, because the mean of its divisors is an integer number (583749208).

Almost surely, 2^2043122221 is an apocalyptic number.

It is an amenable number.

2043122221 is a deficient number, since it is larger than the sum of its proper divisors (291874611).

2043122221 is an equidigital number, since it uses as much as digits as its factorization.

2043122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291874610.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2043122221 is about 45200.9095151856. The cubic root of 2043122221 is about 1268.9118380725.

Adding to 2043122221 its reverse (1222213402), we get a palindrome (3265335623).

The spelling of 2043122221 in words is "two billion, forty-three million, one hundred twenty-two thousand, two hundred twenty-one".