11221022220211 has 4 divisors (see below), whose sum is σ = 11222996715112. Its totient is φ = 11219047725312.

The previous prime is 11221022220197. The next prime is 11221022220263. The reversal of 11221022220211 is 11202222012211.

11221022220211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11221022220211 - 2⁵ = 11221022220179 is a prime.

It is a super-2 number, since 2×11221022220211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221022223211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 987238926 + ... + 987250291.

It is an arithmetic number, because the mean of its divisors is an integer number (2805749178778).

Almost surely, 2^{11221022220211} is an apocalyptic number.

11221022220211 is a deficient number, since it is larger than the sum of its proper divisors (1974494901).

11221022220211 is an equidigital number, since it uses as much as digits as its factorization.

11221022220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1974494900.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11221022220211 its reverse (11202222012211), we get a palindrome (22423244232422).

The spelling of 11221022220211 in words is "eleven trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty thousand, two hundred eleven".