2121032223 has 20 divisors (see below), whose sum is σ = 3169707288. Its totient is φ = 1413462960.

The previous prime is 2121032201. The next prime is 2121032227. The reversal of 2121032223 is 3222301212.

It is not a de Polignac number, because 2121032223 - 2⁵ = 2121032191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121032196 and 2121032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121032227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 355140 + ... + 361062.

Almost surely, 2^2121032223 is an apocalyptic number.

2121032223 is a deficient number, since it is larger than the sum of its proper divisors (1048675065).

2121032223 is an equidigital number, since it uses as much as digits as its factorization.

2121032223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10356 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2121032223 is about 46054.6655942696. The cubic root of 2121032223 is about 1284.8401185912.

Adding to 2121032223 its reverse (3222301212), we get a palindrome (5343333435).

The spelling of 2121032223 in words is "two billion, one hundred twenty-one million, thirty-two thousand, two hundred twenty-three".