2043222221 has 4 divisors (see below), whose sum is σ = 2048789952. Its totient is φ = 2037654492.

The previous prime is 2043222187. The next prime is 2043222281. The reversal of 2043222221 is 1222223402.

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 2043222221 - 2⁶ = 2043222157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2043222193 and 2043222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043222281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2783315 + ... + 2784048.

It is an arithmetic number, because the mean of its divisors is an integer number (512197488).

Almost surely, 2^2043222221 is an apocalyptic number.

It is an amenable number.

2043222221 is a deficient number, since it is larger than the sum of its proper divisors (5567731).

2043222221 is an equidigital number, since it uses as much as digits as its factorization.

2043222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567730.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2043222221 is about 45202.0156740825. The cubic root of 2043222221 is about 1268.9325399036.

Adding to 2043222221 its reverse (1222223402), we get a palindrome (3265445623).

The spelling of 2043222221 in words is "two billion, forty-three million, two hundred twenty-two thousand, two hundred twenty-one".