4112021021 has 16 divisors (see below), whose sum is σ = 4424371200. Its totient is φ = 3810192048.

The previous prime is 4112020981. The next prime is 4112021027. The reversal of 4112021021 is 1201202114.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4112021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4112020987 and 4112021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4112021027) by changing a digit.

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, 147806 + ... + 173408.

It is an arithmetic number, because the mean of its divisors is an integer number (276523200).

Almost surely, 2^4112021021 is an apocalyptic number.

It is an amenable number.

4112021021 is a deficient number, since it is larger than the sum of its proper divisors (312350179).

4112021021 is a wasteful number, since it uses less digits than its factorization.

4112021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25808.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 4112021021 is about 64125.0420740603. The cubic root of 4112021021 is about 1602.0833565313.

Adding to 4112021021 its reverse (1201202114), we get a palindrome (5313223135).

The spelling of 4112021021 in words is "four billion, one hundred twelve million, twenty-one thousand, twenty-one".