2121324023 has 12 divisors (see below), whose sum is σ = 2657483640. Its totient is φ = 1678409712.

The previous prime is 2121324001. The next prime is 2121324131. The reversal of 2121324023 is 3204231212.

It is not a de Polignac number, because 2121324023 - 2¹⁸ = 2121061879 is a prime.

It is a super-2 number, since 2×2121324023² = 9000031221113809058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2121323986 and 2121324004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121324223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1664453 + ... + 1665726.

It is an arithmetic number, because the mean of its divisors is an integer number (221456970).

Almost surely, 2^2121324023 is an apocalyptic number.

2121324023 is a deficient number, since it is larger than the sum of its proper divisors (536159617).

2121324023 is a wasteful number, since it uses less digits than its factorization.

2121324023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330206 (or 3330199 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 2121324023 is about 46057.8334596841. The cubic root of 2121324023 is about 1284.8990363123.

Adding to 2121324023 its reverse (3204231212), we get a palindrome (5325555235).

The spelling of 2121324023 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, twenty-three".