2002401212321 has 2 divisors, whose sum is σ = 2002401212322. Its totient is φ = 2002401212320.

The previous prime is 2002401212303. The next prime is 2002401212351. The reversal of 2002401212321 is 1232121042002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1911582760000 + 90818452321 = 1382600^2 + 301361^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002401212321 - 2⁶ = 2002401212257 is a prime.

It is a super-2 number, since 2×2002401212321² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2002401212293 and 2002401212302.

It is not a weakly prime, because it can be changed into another prime (2002401212351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001200606160 + 1001200606161.

It is an arithmetic number, because the mean of its divisors is an integer number (1001200606161).

Almost surely, 2^{2002401212321} is an apocalyptic number.

It is an amenable number.

2002401212321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2002401212321 is an equidigital number, since it uses as much as digits as its factorization.

2002401212321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 2002401212321 its reverse (1232121042002), we get a palindrome (3234522254323).

The spelling of 2002401212321 in words is "two trillion, two billion, four hundred one million, two hundred twelve thousand, three hundred twenty-one".