2103221000321 has 4 divisors (see below), whose sum is σ = 2403681143232. Its totient is φ = 1802760857412.

The previous prime is 2103221000249. The next prime is 2103221000359. The reversal of 2103221000321 is 1230001223012.

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 not a de Polignac number, because 2103221000321 - 2¹⁴ = 2103220983937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2103221000321.

It is not an unprimeable number, because it can be changed into a prime (2103221000381) 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, 150230071445 + ... + 150230071458.

It is an arithmetic number, because the mean of its divisors is an integer number (600920285808).

Almost surely, 2^{2103221000321} is an apocalyptic number.

It is an amenable number.

2103221000321 is a deficient number, since it is larger than the sum of its proper divisors (300460142911).

2103221000321 is an equidigital number, since it uses as much as digits as its factorization.

2103221000321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300460142910.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2103221000321 its reverse (1230001223012), we get a palindrome (3333222223333).

The spelling of 2103221000321 in words is "two trillion, one hundred three billion, two hundred twenty-one million, three hundred twenty-one", and thus it is an aban number.