11121101100221 has 16 divisors (see below), whose sum is σ = 12734032786176. Its totient is φ = 9514225806336.

The previous prime is 11121101100209. The next prime is 11121101100229. The reversal of 11121101100221 is 12200110112111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11121101100221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11121101100196 and 11121101100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121101100229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23706875 + ... + 24171431.

It is an arithmetic number, because the mean of its divisors is an integer number (795877049136).

Almost surely, 2^{11121101100221} is an apocalyptic number.

It is an amenable number.

11121101100221 is a deficient number, since it is larger than the sum of its proper divisors (1612931685955).

11121101100221 is an equidigital number, since it uses as much as digits as its factorization.

11121101100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471068.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121101100221 its reverse (12200110112111), we get a palindrome (23321211212332).

The spelling of 11121101100221 in words is "eleven trillion, one hundred twenty-one billion, one hundred one million, one hundred thousand, two hundred twenty-one".