2002120210221 has 48 divisors (see below), whose sum is σ = 2777661129600. Its totient is φ = 1282643112960.

The previous prime is 2002120210217. The next prime is 2002120210229. The reversal of 2002120210221 is 1220120212002.

It is not a de Polignac number, because 2002120210221 - 2² = 2002120210217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002120210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002120210229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111960201 + ... + 111978081.

It is an arithmetic number, because the mean of its divisors is an integer number (57867940200).

Almost surely, 2^{2002120210221} is an apocalyptic number.

It is an amenable number.

2002120210221 is a deficient number, since it is larger than the sum of its proper divisors (775540919379).

2002120210221 is a wasteful number, since it uses less digits than its factorization.

2002120210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18294 (or 18257 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2002120210221 its reverse (1220120212002), we get a palindrome (3222240422223).

The spelling of 2002120210221 in words is "two trillion, two billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-one".