2123221223 has 16 divisors (see below), whose sum is σ = 2183811840. Its totient is φ = 2063652096.

The previous prime is 2123221213. The next prime is 2123221229. The reversal of 2123221223 is 3221223212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2123221223 - 2²⁸ = 1854785767 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2123221195 and 2123221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123221229) 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 15 ways as a sum of consecutive naturals, for example, 2530238 + ... + 2531076.

It is an arithmetic number, because the mean of its divisors is an integer number (136488240).

Almost surely, 2^2123221223 is an apocalyptic number.

2123221223 is a deficient number, since it is larger than the sum of its proper divisors (60590617).

2123221223 is a wasteful number, since it uses less digits than its factorization.

2123221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366.

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

The square root of 2123221223 is about 46078.4247018059. The cubic root of 2123221223 is about 1285.2819707543.

Adding to 2123221223 its reverse (3221223212), we get a palindrome (5344444435).

The spelling of 2123221223 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred twenty-three".