2121321120003 has 8 divisors (see below), whose sum is σ = 3142697955600. Its totient is φ = 1414214079984.

The previous prime is 2121321120001. The next prime is 2121321120041. The reversal of 2121321120003 is 3000211231212.

It is not a de Polignac number, because 2121321120003 - 2¹ = 2121321120001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121321120001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39283724418 + ... + 39283724471.

It is an arithmetic number, because the mean of its divisors is an integer number (392837244450).

Almost surely, 2^{2121321120003} is an apocalyptic number.

2121321120003 is a deficient number, since it is larger than the sum of its proper divisors (1021376835597).

2121321120003 is an equidigital number, since it uses as much as digits as its factorization.

2121321120003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78567448898 (or 78567448892 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121321120003 its reverse (3000211231212), we get a palindrome (5121532351215).

The spelling of 2121321120003 in words is "two trillion, one hundred twenty-one billion, three hundred twenty-one million, one hundred twenty thousand, three".