2124212420 has 48 divisors (see below), whose sum is σ = 4909500288. Its totient is φ = 765596160.

The previous prime is 2124212413. The next prime is 2124212491. The reversal of 2124212420 is 242124212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2124212392 and 2124212401.

It is an unprimeable number.

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, 17864 + ... + 67583.

It is an arithmetic number, because the mean of its divisors is an integer number (102281256).

Almost surely, 2^2124212420 is an apocalyptic number.

2124212420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2124212420 is an abundant number, since it is smaller than the sum of its proper divisors (2785287868).

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

2124212420 is a wasteful number, since it uses less digits than its factorization.

2124212420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85580 (or 85578 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2124212420 is about 46089.1789903010. The cubic root of 2124212420 is about 1285.4819451181.

Adding to 2124212420 its reverse (242124212), we get a palindrome (2366336632).

The spelling of 2124212420 in words is "two billion, one hundred twenty-four million, two hundred twelve thousand, four hundred twenty".