11100220211211 has 16 divisors (see below), whose sum is σ = 14803583846400. Its totient is φ = 7398501901760.

The previous prime is 11100220211159. The next prime is 11100220211221. The reversal of 11100220211211 is 11211202200111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11100220211211 - 2⁷ = 11100220211083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11100220211221) 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, 404380615 + ... + 404408063.

It is an arithmetic number, because the mean of its divisors is an integer number (925223990400).

Almost surely, 2^{11100220211211} is an apocalyptic number.

11100220211211 is a deficient number, since it is larger than the sum of its proper divisors (3703363635189).

11100220211211 is a wasteful number, since it uses less digits than its factorization.

11100220211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52506.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11100220211211 its reverse (11211202200111), we get a palindrome (22311422411322).

It can be divided in two parts, 111002 and 20211211, that multiplied together give a palindrome (2243484843422).

The spelling of 11100220211211 in words is "eleven trillion, one hundred billion, two hundred twenty million, two hundred eleven thousand, two hundred eleven".