11101100221 has 8 divisors (see below), whose sum is σ = 11268908864. Its totient is φ = 10933354080.

The previous prime is 11101100201. The next prime is 11101100251. The reversal of 11101100221 is 12200110111.

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 11101100221 - 2²⁹ = 10564229309 is a prime.

It is a super-2 number, since 2×11101100221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11101100198 and 11101100207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101100201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442936 + ... + 467326.

It is an arithmetic number, because the mean of its divisors is an integer number (1408613608).

Almost surely, 2^11101100221 is an apocalyptic number.

It is an amenable number.

11101100221 is a deficient number, since it is larger than the sum of its proper divisors (167808643).

11101100221 is an equidigital number, since it uses as much as digits as its factorization.

11101100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31251.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11101100221 its reverse (12200110111), we get a palindrome (23301210332).

The spelling of 11101100221 in words is "eleven billion, one hundred one million, one hundred thousand, two hundred twenty-one".