20013363527221 has 8 divisors (see below), whose sum is σ = 20209756178304. Its totient is φ = 19817882211600.

The previous prime is 20013363527219. The next prime is 20013363527233. The reversal of 20013363527221 is 12272536331002.

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

It is a cyclic number.

It is not a de Polignac number, because 20013363527221 - 2¹ = 20013363527219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013363527251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227789730 + ... + 227877571.

It is an arithmetic number, because the mean of its divisors is an integer number (2526219522288).

Almost surely, 2^{20013363527221} is an apocalyptic number.

It is an amenable number.

20013363527221 is a deficient number, since it is larger than the sum of its proper divisors (196392651083).

20013363527221 is a wasteful number, since it uses less digits than its factorization.

20013363527221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455667731.

The product of its (nonzero) digits is 90720, while the sum is 37.

Adding to 20013363527221 its reverse (12272536331002), we get a palindrome (32285899858223).

The spelling of 20013363527221 in words is "twenty trillion, thirteen billion, three hundred sixty-three million, five hundred twenty-seven thousand, two hundred twenty-one".