11101120200221 has 4 divisors (see below), whose sum is σ = 11119229695452. Its totient is φ = 11083010704992.

The previous prime is 11101120200151. The next prime is 11101120200257. The reversal of 11101120200221 is 12200202110111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1137539568025 + 9963580632196 = 1066555^2 + 3156514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101120200221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101120200196 and 11101120200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101120203221) 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 3 ways as a sum of consecutive naturals, for example, 9054746696 + ... + 9054747921.

It is an arithmetic number, because the mean of its divisors is an integer number (2779807423863).

Almost surely, 2^{11101120200221} is an apocalyptic number.

It is an amenable number.

11101120200221 is a deficient number, since it is larger than the sum of its proper divisors (18109495231).

11101120200221 is an equidigital number, since it uses as much as digits as its factorization.

11101120200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18109495230.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11101120200221 its reverse (12200202110111), we get a palindrome (23301322310332).

The spelling of 11101120200221 in words is "eleven trillion, one hundred one billion, one hundred twenty million, two hundred thousand, two hundred twenty-one".