2002000221 has 24 divisors (see below), whose sum is σ = 3116343776. Its totient is φ = 1231161120.

The previous prime is 2002000219. The next prime is 2002000229. The reversal of 2002000221 is 1220002002.

It is not a de Polignac number, because 2002000221 - 2¹ = 2002000219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002000229) 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 23 ways as a sum of consecutive naturals, for example, 196626 + ... + 206556.

Almost surely, 2^2002000221 is an apocalyptic number.

It is an amenable number.

2002000221 is a deficient number, since it is larger than the sum of its proper divisors (1114343555).

2002000221 is a wasteful number, since it uses less digits than its factorization.

2002000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11673 (or 11670 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2002000221 is about 44743.7171120147. The cubic root of 2002000221 is about 1260.3409300408.

Adding to 2002000221 its reverse (1220002002), we get a palindrome (3222002223).

The spelling of 2002000221 in words is "two billion, two million, two hundred twenty-one", and thus it is an aban number.