2121403224 has 32 divisors (see below), whose sum is σ = 5306526720. Its totient is φ = 706731936.

The previous prime is 2121403211. The next prime is 2121403261. The reversal of 2121403224 is 4223041212.

2121403224 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2121403224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19509 + ... + 67995.

It is an arithmetic number, because the mean of its divisors is an integer number (165828960).

Almost surely, 2^2121403224 is an apocalyptic number.

2121403224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2121403224 is an abundant number, since it is smaller than the sum of its proper divisors (3185123496).

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

2121403224 is a wasteful number, since it uses less digits than its factorization.

2121403224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50319 (or 50315 counting only the distinct ones).

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

The square root of 2121403224 is about 46058.6932511117. The cubic root of 2121403224 is about 1284.9150269579.

Adding to 2121403224 its reverse (4223041212), we get a palindrome (6344444436).

The spelling of 2121403224 in words is "two billion, one hundred twenty-one million, four hundred three thousand, two hundred twenty-four".