2121333223 has 4 divisors (see below), whose sum is σ = 2232982360. Its totient is φ = 2009684088.

The previous prime is 2121333211. The next prime is 2121333241. The reversal of 2121333223 is 3223331212.

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-2121333223 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2121333194 and 2121333203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121333523) 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, 55824540 + ... + 55824577.

It is an arithmetic number, because the mean of its divisors is an integer number (558245590).

Almost surely, 2^2121333223 is an apocalyptic number.

2121333223 is a deficient number, since it is larger than the sum of its proper divisors (111649137).

2121333223 is a wasteful number, since it uses less digits than its factorization.

2121333223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111649136.

The product of its digits is 1296, while the sum is 22.

The square root of 2121333223 is about 46057.9333340088. The cubic root of 2121333223 is about 1284.9008938085.

Adding to 2121333223 its reverse (3223331212), we get a palindrome (5344664435).

The spelling of 2121333223 in words is "two billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty-three".