2002221321 has 8 divisors (see below), whose sum is σ = 2679062880. Its totient is φ = 1330096992.

The previous prime is 2002221313. The next prime is 2002221337. The reversal of 2002221321 is 1231222002.

It is a happy number.

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

It is not a de Polignac number, because 2002221321 - 2³ = 2002221313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2002221321.

It is not an unprimeable number, because it can be changed into a prime (2002221301) 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, 1178316 + ... + 1180013.

It is an arithmetic number, because the mean of its divisors is an integer number (334882860).

Almost surely, 2^2002221321 is an apocalyptic number.

It is an amenable number.

2002221321 is a deficient number, since it is larger than the sum of its proper divisors (676841559).

2002221321 is a wasteful number, since it uses less digits than its factorization.

2002221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358615.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2002221321 is about 44746.1877817541. The cubic root of 2002221321 is about 1260.3873254939.

Adding to 2002221321 its reverse (1231222002), we get a palindrome (3233443323).

The spelling of 2002221321 in words is "two billion, two million, two hundred twenty-one thousand, three hundred twenty-one".