4401130021 has 4 divisors (see below), whose sum is σ = 4414190092. Its totient is φ = 4388069952.

The previous prime is 4401129991. The next prime is 4401130033. The reversal of 4401130021 is 1200311044.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3104049796 + 1297080225 = 55714^2 + 36015^2 .

It is a cyclic number.

It is not a de Polignac number, because 4401130021 - 2⁷ = 4401129893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4401129977 and 4401130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4401130061) 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, 6529530 + ... + 6530203.

It is an arithmetic number, because the mean of its divisors is an integer number (1103547523).

Almost surely, 2^4401130021 is an apocalyptic number.

It is an amenable number.

4401130021 is a deficient number, since it is larger than the sum of its proper divisors (13060071).

4401130021 is a wasteful number, since it uses less digits than its factorization.

4401130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13060070.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 4401130021 is about 66341.0131140609. The cubic root of 4401130021 is about 1638.7828095336.

Adding to 4401130021 its reverse (1200311044), we get a palindrome (5601441065).

The spelling of 4401130021 in words is "four billion, four hundred one million, one hundred thirty thousand, twenty-one".