20130021441 has 6 divisors (see below), whose sum is σ = 29076697650. Its totient is φ = 13420014288.

The previous prime is 20130021413. The next prime is 20130021451. The reversal of 20130021441 is 14412003102.

20130021441 is a `hidden beast` number, since 201 + 3 + 0 + 0 + 21 + 441 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12642753600 + 7487267841 = 112440^2 + 86529^2 .

It is not a de Polignac number, because 20130021441 - 2⁷ = 20130021313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20130021451) 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 5 ways as a sum of consecutive naturals, for example, 1118334516 + ... + 1118334533.

It is an arithmetic number, because the mean of its divisors is an integer number (4846116275).

Almost surely, 2^20130021441 is an apocalyptic number.

It is an amenable number.

20130021441 is a deficient number, since it is larger than the sum of its proper divisors (8946676209).

20130021441 is a wasteful number, since it uses less digits than its factorization.

20130021441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236669055 (or 2236669052 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20130021441 its reverse (14412003102), we get a palindrome (34542024543).

The spelling of 20130021441 in words is "twenty billion, one hundred thirty million, twenty-one thousand, four hundred forty-one".