2130321200321 has 4 divisors (see below), whose sum is σ = 2130324811200. Its totient is φ = 2130317589444.

The previous prime is 2130321200251. The next prime is 2130321200323. The reversal of 2130321200321 is 1230021230312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130321200321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130321200293 and 2130321200302.

It is not an unprimeable number, because it can be changed into a prime (2130321200323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691301 + ... + 2176818.

It is an arithmetic number, because the mean of its divisors is an integer number (532581202800).

Almost surely, 2^{2130321200321} is an apocalyptic number.

It is an amenable number.

2130321200321 is a deficient number, since it is larger than the sum of its proper divisors (3610879).

2130321200321 is an equidigital number, since it uses as much as digits as its factorization.

2130321200321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610878.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 2130321200321 its reverse (1230021230312), we get a palindrome (3360342430633).

The spelling of 2130321200321 in words is "two trillion, one hundred thirty billion, three hundred twenty-one million, two hundred thousand, three hundred twenty-one".