2121330311023 has 72 divisors (see below), whose sum is σ = 2802334480512. Its totient is φ = 1598268672000.

The previous prime is 2121330310999. The next prime is 2121330311119. The reversal of 2121330311023 is 3201130331212.

It is not a de Polignac number, because 2121330311023 - 2⁵ = 2121330310991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121330310985 and 2121330311003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121330311123) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 242794111 + ... + 242802847.

Almost surely, 2^{2121330311023} is an apocalyptic number.

2121330311023 is a deficient number, since it is larger than the sum of its proper divisors (681004169489).

2121330311023 is a wasteful number, since it uses less digits than its factorization.

2121330311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125 (or 10107 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2121330311023 its reverse (3201130331212), we get a palindrome (5322460642235).

The spelling of 2121330311023 in words is "two trillion, one hundred twenty-one billion, three hundred thirty million, three hundred eleven thousand, twenty-three".