2123222121323 has 4 divisors (see below), whose sum is σ = 2123225265240. Its totient is φ = 2123218977408.

The previous prime is 2123222121311. The next prime is 2123222121329. The reversal of 2123222121323 is 3231212223212.

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 2123222121323 - 2⁶ = 2123222121259 is a prime.

It is a super-4 number, since 4×2123222121323⁴ (a number of 50 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123222121292 and 2123222121301.

It is not an unprimeable number, because it can be changed into a prime (2123222121329) 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, 98678 + ... + 2063051.

It is an arithmetic number, because the mean of its divisors is an integer number (530806316310).

Almost surely, 2^{2123222121323} is an apocalyptic number.

2123222121323 is a deficient number, since it is larger than the sum of its proper divisors (3143917).

2123222121323 is an equidigital number, since it uses as much as digits as its factorization.

2123222121323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143916.

The product of its digits is 3456, while the sum is 26.

Adding to 2123222121323 its reverse (3231212223212), we get a palindrome (5354434344535).

The spelling of 2123222121323 in words is "two trillion, one hundred twenty-three billion, two hundred twenty-two million, one hundred twenty-one thousand, three hundred twenty-three".