4220124021 has 24 divisors (see below), whose sum is σ = 6244552704. Its totient is φ = 2745459360.

The previous prime is 4220123987. The next prime is 4220124043. The reversal of 4220124021 is 1204210224.

4220124021 is a `hidden beast` number, since 422 + 0 + 1 + 240 + 2 + 1 = 666.

4220124021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4220124021 - 2²⁵ = 4186569589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4220123985 and 4220124003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4220124061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39460 + ... + 99986.

It is an arithmetic number, because the mean of its divisors is an integer number (260189696).

Almost surely, 2^4220124021 is an apocalyptic number.

It is an amenable number.

4220124021 is a deficient number, since it is larger than the sum of its proper divisors (2024428683).

4220124021 is a wasteful number, since it uses less digits than its factorization.

4220124021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60721 (or 60718 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 4220124021 is about 64962.4816413289. The cubic root of 4220124021 is about 1616.0014200240.

Adding to 4220124021 its reverse (1204210224), we get a palindrome (5424334245).

The spelling of 4220124021 in words is "four billion, two hundred twenty million, one hundred twenty-four thousand, twenty-one".