11200111221 has 8 divisors (see below), whose sum is σ = 16082211040. Its totient is φ = 6892376112.

The previous prime is 11200111201. The next prime is 11200111231. The reversal of 11200111221 is 12211100211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11200111221 - 2⁵ = 11200111189 is a prime.

It is a super-2 number, since 2×11200111221² (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 = 11200111197 and 11200111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200111201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143591131 + ... + 143591208.

It is an arithmetic number, because the mean of its divisors is an integer number (2010276380).

Almost surely, 2^11200111221 is an apocalyptic number.

It is an amenable number.

11200111221 is a deficient number, since it is larger than the sum of its proper divisors (4882099819).

11200111221 is a wasteful number, since it uses less digits than its factorization.

11200111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287182355.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11200111221 its reverse (12211100211), we get a palindrome (23411211432).

The spelling of 11200111221 in words is "eleven billion, two hundred million, one hundred eleven thousand, two hundred twenty-one".