2123210023 has 4 divisors (see below), whose sum is σ = 2316229128. Its totient is φ = 1930190920.

The previous prime is 2123209987. The next prime is 2123210039. The reversal of 2123210023 is 3200123212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2123210023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123209979 and 2123210006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123210093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96509536 + ... + 96509557.

It is an arithmetic number, because the mean of its divisors is an integer number (579057282).

Almost surely, 2^2123210023 is an apocalyptic number.

2123210023 is a deficient number, since it is larger than the sum of its proper divisors (193019105).

2123210023 is a wasteful number, since it uses less digits than its factorization.

2123210023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193019104.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123210023 is about 46078.3031697132. The cubic root of 2123210023 is about 1285.2797107945.

Adding to 2123210023 its reverse (3200123212), we get a palindrome (5323333235).

The spelling of 2123210023 in words is "two billion, one hundred twenty-three million, two hundred ten thousand, twenty-three".