2002331321421 has 16 divisors (see below), whose sum is σ = 2676822033600. Its totient is φ = 1331364551168.

The previous prime is 2002331321401. The next prime is 2002331321479. The reversal of 2002331321421 is 1241231332002.

It is a cyclic number.

It is not a de Polignac number, because 2002331321421 - 2¹⁵ = 2002331288653 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2002331321391 and 2002331321400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002331321401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19820125 + ... + 19920893.

It is an arithmetic number, because the mean of its divisors is an integer number (167301377100).

Almost surely, 2^{2002331321421} is an apocalyptic number.

It is an amenable number.

2002331321421 is a deficient number, since it is larger than the sum of its proper divisors (674490712179).

2002331321421 is a wasteful number, since it uses less digits than its factorization.

2002331321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118188.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 2002331321421 its reverse (1241231332002), we get a palindrome (3243562653423).

The spelling of 2002331321421 in words is "two trillion, two billion, three hundred thirty-one million, three hundred twenty-one thousand, four hundred twenty-one".