4212124321 has 4 divisors (see below), whose sum is σ = 4242869892. Its totient is φ = 4181378752.

The previous prime is 4212124277. The next prime is 4212124379. The reversal of 4212124321 is 1234212124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2803173025 + 1408951296 = 52945^2 + 37536^2 .

It is a cyclic number.

It is not a de Polignac number, because 4212124321 - 2⁹ = 4212123809 is a prime.

It is a super-2 number, since 2×4212124321² = 35483982591119422082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4212124292 and 4212124301.

It is not an unprimeable number, because it can be changed into a prime (4212124621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15372580 + ... + 15372853.

It is an arithmetic number, because the mean of its divisors is an integer number (1060717473).

Almost surely, 2^4212124321 is an apocalyptic number.

It is an amenable number.

4212124321 is a deficient number, since it is larger than the sum of its proper divisors (30745571).

4212124321 is a wasteful number, since it uses less digits than its factorization.

4212124321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30745570.

The product of its digits is 768, while the sum is 22.

The square root of 4212124321 is about 64900.8807413274. The cubic root of 4212124321 is about 1614.9796725101.

Adding to 4212124321 its reverse (1234212124), we get a palindrome (5446336445).

The spelling of 4212124321 in words is "four billion, two hundred twelve million, one hundred twenty-four thousand, three hundred twenty-one".