2121120323013 has 16 divisors (see below), whose sum is σ = 2881756828160. Its totient is φ = 1387482753024.

The previous prime is 2121120322999. The next prime is 2121120323149. The reversal of 2121120323013 is 3103230211212.

It is not a de Polignac number, because 2121120323013 - 2¹² = 2121120318917 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 (2121120323513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25049653 + ... + 25134186.

It is an arithmetic number, because the mean of its divisors is an integer number (180109801760).

Almost surely, 2^{2121120323013} is an apocalyptic number.

It is an amenable number.

2121120323013 is a deficient number, since it is larger than the sum of its proper divisors (760636505147).

2121120323013 is a wasteful number, since it uses less digits than its factorization.

2121120323013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50184108.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2121120323013 its reverse (3103230211212), we get a palindrome (5224350534225).

The spelling of 2121120323013 in words is "two trillion, one hundred twenty-one billion, one hundred twenty million, three hundred twenty-three thousand, thirteen".