4255212021 has 16 divisors (see below), whose sum is σ = 5881080000. Its totient is φ = 2733470208.

The previous prime is 4255212011. The next prime is 4255212043. The reversal of 4255212021 is 1202125524.

It is not a de Polignac number, because 4255212021 - 2¹⁸ = 4254949877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4255211982 and 4255212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4255212011) 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 15 ways as a sum of consecutive naturals, for example, 5596 + ... + 92421.

It is an arithmetic number, because the mean of its divisors is an integer number (367567500).

Almost surely, 2^4255212021 is an apocalyptic number.

It is an amenable number.

4255212021 is a deficient number, since it is larger than the sum of its proper divisors (1625867979).

4255212021 is a wasteful number, since it uses less digits than its factorization.

4255212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98548.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 4255212021 is about 65231.9861800942. The cubic root of 4255212021 is about 1620.4677840552.

Adding to 4255212021 its reverse (1202125524), we get a palindrome (5457337545).

The spelling of 4255212021 in words is "four billion, two hundred fifty-five million, two hundred twelve thousand, twenty-one".