2121020330303 has 4 divisors (see below), whose sum is σ = 2424023234640. Its totient is φ = 1818017425968.

The previous prime is 2121020330287. The next prime is 2121020330323. The reversal of 2121020330303 is 3030330201212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121020330303 - 2⁴ = 2121020330287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121020330323) 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, 151501452158 + ... + 151501452171.

It is an arithmetic number, because the mean of its divisors is an integer number (606005808660).

Almost surely, 2^{2121020330303} is an apocalyptic number.

2121020330303 is a deficient number, since it is larger than the sum of its proper divisors (303002904337).

2121020330303 is an equidigital number, since it uses as much as digits as its factorization.

2121020330303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303002904336.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 2121020330303 its reverse (3030330201212), we get a palindrome (5151350531515).

The spelling of 2121020330303 in words is "two trillion, one hundred twenty-one billion, twenty million, three hundred thirty thousand, three hundred three".