2123221224 has 64 divisors (see below), whose sum is σ = 5352984000. Its totient is φ = 701775360.

The previous prime is 2123221213. The next prime is 2123221229. The reversal of 2123221224 is 4221223212.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 2123221224.

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 (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2471307 + ... + 2472165.

It is an arithmetic number, because the mean of its divisors is an integer number (83640375).

Almost surely, 2^2123221224 is an apocalyptic number.

2123221224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2123221224 is an abundant number, since it is smaller than the sum of its proper divisors (3229762776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123221224 is a wasteful number, since it uses less digits than its factorization.

2123221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1614 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 2123221224 is about 46078.4247126570. The cubic root of 2123221224 is about 1285.2819709560.

Adding to 2123221224 its reverse (4221223212), we get a palindrome (6344444436).

The spelling of 2123221224 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred twenty-four".