4100044021 has 4 divisors (see below), whose sum is σ = 4106799232. Its totient is φ = 4093288812.

The previous prime is 4100044019. The next prime is 4100044049. The reversal of 4100044021 is 1204400014.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4100044021 - 2¹ = 4100044019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4100043986 and 4100044004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4100042021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3376695 + ... + 3377908.

It is an arithmetic number, because the mean of its divisors is an integer number (1026699808).

Almost surely, 2^4100044021 is an apocalyptic number.

It is an amenable number.

4100044021 is a deficient number, since it is larger than the sum of its proper divisors (6755211).

4100044021 is an equidigital number, since it uses as much as digits as its factorization.

4100044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755210.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 4100044021 is about 64031.5861196644. The cubic root of 4100044021 is about 1600.5263920350.

Adding to 4100044021 its reverse (1204400014), we get a palindrome (5304444035).

The spelling of 4100044021 in words is "four billion, one hundred million, forty-four thousand, twenty-one".