20001100011221 has 8 divisors (see below), whose sum is σ = 22932857344320. Its totient is φ = 17087957011008.

The previous prime is 20001100011197. The next prime is 20001100011223. The reversal of 20001100011221 is 12211000110002.

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 20001100011221 - 2¹⁰ = 20001100010197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001100011223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4653580916 + ... + 4653585213.

It is an arithmetic number, because the mean of its divisors is an integer number (2866607168040).

Almost surely, 2^{20001100011221} is an apocalyptic number.

It is an amenable number.

20001100011221 is a deficient number, since it is larger than the sum of its proper divisors (2931757333099).

20001100011221 is an equidigital number, since it uses as much as digits as its factorization.

20001100011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9307166443.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20001100011221 its reverse (12211000110002), we get a palindrome (32212100121223).

The spelling of 20001100011221 in words is "twenty trillion, one billion, one hundred million, eleven thousand, two hundred twenty-one".