2121013323323 has 4 divisors (see below), whose sum is σ = 2136272412120. Its totient is φ = 2105754234528.

The previous prime is 2121013323307. The next prime is 2121013323329. The reversal of 2121013323323 is 3233233101212.

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 2121013323323 - 2⁴ = 2121013323307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121013323292 and 2121013323301.

It is not an unprimeable number, because it can be changed into a prime (2121013323329) 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, 7629544190 + ... + 7629544467.

It is an arithmetic number, because the mean of its divisors is an integer number (534068103030).

Almost surely, 2^{2121013323323} is an apocalyptic number.

2121013323323 is a deficient number, since it is larger than the sum of its proper divisors (15259088797).

2121013323323 is a wasteful number, since it uses less digits than its factorization.

2121013323323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15259088796.

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 2121013323323 its reverse (3233233101212), we get a palindrome (5354246424535).

The spelling of 2121013323323 in words is "two trillion, one hundred twenty-one billion, thirteen million, three hundred twenty-three thousand, three hundred twenty-three".