2002120221 has 8 divisors (see below), whose sum is σ = 2669717440. Its totient is φ = 1334634912.

The previous prime is 2002120163. The next prime is 2002120247. The reversal of 2002120221 is 1220212002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2002120221 - 2⁷ = 2002120093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002120197 and 2002120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002120321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32361 + ... + 71073.

It is an arithmetic number, because the mean of its divisors is an integer number (333714680).

Almost surely, 2^2002120221 is an apocalyptic number.

It is an amenable number.

2002120221 is a deficient number, since it is larger than the sum of its proper divisors (667597219).

2002120221 is a wasteful number, since it uses less digits than its factorization.

2002120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55955.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2002120221 is about 44745.0580623157. The cubic root of 2002120221 is about 1260.3661111719.

Adding to 2002120221 its reverse (1220212002), we get a palindrome (3222332223).

The spelling of 2002120221 in words is "two billion, two million, one hundred twenty thousand, two hundred twenty-one".