2003222221 has 64 divisors (see below), whose sum is σ = 2769500160. Its totient is φ = 1398792960.

The previous prime is 2003222171. The next prime is 2003222233. The reversal of 2003222221 is 1222223002.

It is a cyclic number.

It is not a de Polignac number, because 2003222221 - 2¹⁹ = 2002697933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003222195 and 2003222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003222621) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6319155 + ... + 6319471.

It is an arithmetic number, because the mean of its divisors is an integer number (43273440).

Almost surely, 2^2003222221 is an apocalyptic number.

It is an amenable number.

2003222221 is a deficient number, since it is larger than the sum of its proper divisors (766277939).

2003222221 is a wasteful number, since it uses less digits than its factorization.

2003222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2003222221 is about 44757.3705773697. The cubic root of 2003222221 is about 1260.5973108586.

Adding to 2003222221 its reverse (1222223002), we get a palindrome (3225445223).

The spelling of 2003222221 in words is "two billion, three million, two hundred twenty-two thousand, two hundred twenty-one".