2002131323221 has 16 divisors (see below), whose sum is σ = 2038416307200. Its totient is φ = 1966040013168.

The previous prime is 2002131323207. The next prime is 2002131323237. The reversal of 2002131323221 is 1223231312002.

It is a cyclic number.

It is not a de Polignac number, because 2002131323221 - 2¹³ = 2002131315029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2002131323192 and 2002131323201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002131323251) 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, 52366650 + ... + 52404868.

It is an arithmetic number, because the mean of its divisors is an integer number (127401019200).

Almost surely, 2^{2002131323221} is an apocalyptic number.

It is an amenable number.

2002131323221 is a deficient number, since it is larger than the sum of its proper divisors (36284983979).

2002131323221 is a wasteful number, since it uses less digits than its factorization.

2002131323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40728.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2002131323221 its reverse (1223231312002), we get a palindrome (3225362635223).

The spelling of 2002131323221 in words is "two trillion, two billion, one hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-one".