2123421333303 has 4 divisors (see below), whose sum is σ = 2831228444408. Its totient is φ = 1415614222200.

The previous prime is 2123421333289. The next prime is 2123421333311. The reversal of 2123421333303 is 3033331243212.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2123421333303 - 2⁴ = 2123421333287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123421333343) 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, 353903555548 + ... + 353903555553.

It is an arithmetic number, because the mean of its divisors is an integer number (707807111102).

Almost surely, 2^{2123421333303} is an apocalyptic number.

2123421333303 is a deficient number, since it is larger than the sum of its proper divisors (707807111105).

2123421333303 is an equidigital number, since it uses as much as digits as its factorization.

2123421333303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707807111104.

The product of its (nonzero) digits is 23328, while the sum is 30.

Adding to 2123421333303 its reverse (3033331243212), we get a palindrome (5156752576515).

Subtracting 2123421333303 from its reverse (3033331243212), we obtain a palindrome (909909909909).

The spelling of 2123421333303 in words is "two trillion, one hundred twenty-three billion, four hundred twenty-one million, three hundred thirty-three thousand, three hundred three".