2002322221 has 2 divisors, whose sum is σ = 2002322222. Its totient is φ = 2002322220.

The previous prime is 2002322171. The next prime is 2002322227. The reversal of 2002322221 is 1222232002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1805060196 + 197262025 = 42486^2 + 14045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002322221 - 2¹³ = 2002314029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2002322195 and 2002322204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2002322227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001161110 + 1001161111.

It is an arithmetic number, because the mean of its divisors is an integer number (1001161111).

Almost surely, 2^2002322221 is an apocalyptic number.

It is an amenable number.

2002322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002322221 is an equidigital number, since it uses as much as digits as its factorization.

2002322221 is an evil number, because the sum of its binary digits is even.

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

The square root of 2002322221 is about 44747.3152379000. The cubic root of 2002322221 is about 1260.4084971369.

Adding to 2002322221 its reverse (1222232002), we get a palindrome (3224554223).

The spelling of 2002322221 in words is "two billion, two million, three hundred twenty-two thousand, two hundred twenty-one".