21040444313001 has 12 divisors (see below), whose sum is σ = 30437731351300. Its totient is φ = 14005742050080.

The previous prime is 21040444312991. The next prime is 21040444313017. The reversal of 21040444313001 is 10031344404012.

21040444313001 is a `hidden beast` number, since 210 + 4 + 0 + 4 + 443 + 1 + 3 + 0 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11990118155625 + 9050326157376 = 3462675^2 + 3008376^2 .

It is a de Polignac number, because none of the positive numbers 2^k-21040444313001 is a prime.

It is a super-2 number, since 2×21040444313001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21040444313701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1768395826 + ... + 1768407723.

Almost surely, 2^{21040444313001} is an apocalyptic number.

It is an amenable number.

21040444313001 is a deficient number, since it is larger than the sum of its proper divisors (9397287038299).

21040444313001 is a wasteful number, since it uses less digits than its factorization.

21040444313001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536804216 (or 3536804213 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 21040444313001 its reverse (10031344404012), we get a palindrome (31071788717013).

The spelling of 21040444313001 in words is "twenty-one trillion, forty billion, four hundred forty-four million, three hundred thirteen thousand, one".