2124221121 has 48 divisors (see below), whose sum is σ = 3393187200. Its totient is φ = 1269864960.

The previous prime is 2124221119. The next prime is 2124221167. The reversal of 2124221121 is 1211224212.

2124221121 is a `hidden beast` number, since 212 + 422 + 11 + 21 = 666.

2124221121 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2124221121 - 2¹ = 2124221119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2124221094 and 2124221103.

It is not an unprimeable number, because it can be changed into a prime (2124226121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3545980 + ... + 3546578.

It is an arithmetic number, because the mean of its divisors is an integer number (70691400).

Almost surely, 2^2124221121 is an apocalyptic number.

It is an amenable number.

2124221121 is a deficient number, since it is larger than the sum of its proper divisors (1268966079).

2124221121 is a wasteful number, since it uses less digits than its factorization.

2124221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046 (or 1043 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 2124221121 is about 46089.2733832939. The cubic root of 2124221121 is about 1285.4837002726.

Adding to 2124221121 its reverse (1211224212), we get a palindrome (3335445333).

The spelling of 2124221121 in words is "two billion, one hundred twenty-four million, two hundred twenty-one thousand, one hundred twenty-one".