20001322841 has 8 divisors (see below), whose sum is σ = 20723690184. Its totient is φ = 19288523520.

The previous prime is 20001322829. The next prime is 20001322843. The reversal of 20001322841 is 14822310002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3204126025 + 16797196816 = 56605^2 + 129604^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001322841 is a prime.

It is a super-2 number, since 2×20001322841² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001322843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2387750 + ... + 2396111.

It is an arithmetic number, because the mean of its divisors is an integer number (2590461273).

Almost surely, 2^20001322841 is an apocalyptic number.

It is an amenable number.

20001322841 is a deficient number, since it is larger than the sum of its proper divisors (722367343).

20001322841 is a wasteful number, since it uses less digits than its factorization.

20001322841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4784011.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20001322841 its reverse (14822310002), we get a palindrome (34823632843).

The spelling of 20001322841 in words is "twenty billion, one million, three hundred twenty-two thousand, eight hundred forty-one".