11221100211 has 16 divisors (see below), whose sum is σ = 15652482048. Its totient is φ = 7142990400.

The previous prime is 11221100207. The next prime is 11221100213. The reversal of 11221100211 is 11200112211.

It is not a de Polignac number, because 11221100211 - 2² = 11221100207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11221100213) 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, 964735 + ... + 976296.

It is an arithmetic number, because the mean of its divisors is an integer number (978280128).

Almost surely, 2^11221100211 is an apocalyptic number.

11221100211 is a deficient number, since it is larger than the sum of its proper divisors (4431381837).

11221100211 is a wasteful number, since it uses less digits than its factorization.

11221100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941122.

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

Adding to 11221100211 its reverse (11200112211), we get a palindrome (22421212422).

It can be divided in two parts, 112 and 21100211, that multiplied together give a palindrome (2363223632).

The spelling of 11221100211 in words is "eleven billion, two hundred twenty-one million, one hundred thousand, two hundred eleven".