2120332303021 has 4 divisors (see below), whose sum is σ = 2120375670912. Its totient is φ = 2120288935132.

The previous prime is 2120332303007. The next prime is 2120332303031. The reversal of 2120332303021 is 1203032330212.

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-2120332303021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2120332302983 and 2120332303001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120332303031) 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, 21610525 + ... + 21708418.

It is an arithmetic number, because the mean of its divisors is an integer number (530093917728).

Almost surely, 2^{2120332303021} is an apocalyptic number.

It is an amenable number.

2120332303021 is a deficient number, since it is larger than the sum of its proper divisors (43367891).

2120332303021 is an equidigital number, since it uses as much as digits as its factorization.

2120332303021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43367890.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 2120332303021 its reverse (1203032330212), we get a palindrome (3323364633233).

The spelling of 2120332303021 in words is "two trillion, one hundred twenty billion, three hundred thirty-two million, three hundred three thousand, twenty-one".