20513521022241 has 16 divisors (see below), whose sum is σ = 29631691361664. Its totient is φ = 12548114191104.

The previous prime is 20513521022207. The next prime is 20513521022261. The reversal of 20513521022241 is 14222012531502.

It is not a de Polignac number, because 20513521022241 - 2¹⁵ = 20513520989473 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20513521022199 and 20513521022208.

It is not an unprimeable number, because it can be changed into a prime (20513521022261) 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 15 ways as a sum of consecutive naturals, for example, 1574807016 + ... + 1574820041.

It is an arithmetic number, because the mean of its divisors is an integer number (1851980710104).

Almost surely, 2^{20513521022241} is an apocalyptic number.

It is an amenable number.

20513521022241 is a deficient number, since it is larger than the sum of its proper divisors (9118170339423).

20513521022241 is a wasteful number, since it uses less digits than its factorization.

20513521022241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149627240.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 20513521022241 its reverse (14222012531502), we get a palindrome (34735533553743).

The spelling of 20513521022241 in words is "twenty trillion, five hundred thirteen billion, five hundred twenty-one million, twenty-two thousand, two hundred forty-one".