2121331223 has 12 divisors (see below), whose sum is σ = 2333144520. Its totient is φ = 1927297680.

The previous prime is 2121331207. The next prime is 2121331241. The reversal of 2121331223 is 3221331212.

It is not a de Polignac number, because 2121331223 - 2⁴ = 2121331207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2121331195 and 2121331204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121331283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237248 + ... + 246026.

It is an arithmetic number, because the mean of its divisors is an integer number (194428710).

Almost surely, 2^2121331223 is an apocalyptic number.

2121331223 is a deficient number, since it is larger than the sum of its proper divisors (211813297).

2121331223 is a wasteful number, since it uses less digits than its factorization.

2121331223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10798 (or 10787 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 2121331223 is about 46057.9116222175. The cubic root of 2121331223 is about 1284.9004900055.

Adding to 2121331223 its reverse (3221331212), we get a palindrome (5342662435).

The spelling of 2121331223 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred twenty-three".