11100100020221 has 24 divisors (see below), whose sum is σ = 11871736565760. Its totient is φ = 10376253262592.

The previous prime is 11100100020209. The next prime is 11100100020263. The reversal of 11100100020221 is 12202000100111.

11100100020221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-11100100020221 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 (11100100070221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26244395 + ... + 26663991.

It is an arithmetic number, because the mean of its divisors is an integer number (494655690240).

Almost surely, 2^{11100100020221} is an apocalyptic number.

It is an amenable number.

11100100020221 is a deficient number, since it is larger than the sum of its proper divisors (771636545539).

11100100020221 is a wasteful number, since it uses less digits than its factorization.

11100100020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420253 (or 420236 counting only the distinct ones).

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

Adding to 11100100020221 its reverse (12202000100111), we get a palindrome (23302100120332).

The spelling of 11100100020221 in words is "eleven trillion, one hundred billion, one hundred million, twenty thousand, two hundred twenty-one".