4033212021 has 20 divisors (see below), whose sum is σ = 6092628300. Its totient is φ = 2658591936.

The previous prime is 4033212011. The next prime is 4033212037. The reversal of 4033212021 is 1202123304.

It can be written as a sum of positive squares in 2 ways, for example, as 2045300625 + 1987911396 = 45225^2 + 44586^2 .

It is not a de Polignac number, because 4033212021 - 2⁹ = 4033211509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4033211985 and 4033212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4033212011) 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 19 ways as a sum of consecutive naturals, for example, 272526 + ... + 286943.

It is an arithmetic number, because the mean of its divisors is an integer number (304631415).

Almost surely, 2^4033212021 is an apocalyptic number.

It is an amenable number.

4033212021 is a deficient number, since it is larger than the sum of its proper divisors (2059416279).

4033212021 is an equidigital number, since it uses as much as digits as its factorization.

4033212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559570 (or 559561 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 4033212021 is about 63507.5745167456. The cubic root of 4033212021 is about 1591.7823480310.

Adding to 4033212021 its reverse (1202123304), we get a palindrome (5235335325).

The spelling of 4033212021 in words is "four billion, thirty-three million, two hundred twelve thousand, twenty-one".