11121122220211 has 8 divisors (see below), whose sum is σ = 11135183321600. Its totient is φ = 11107067577480.

The previous prime is 11121122220193. The next prime is 11121122220233. The reversal of 11121122220211 is 11202222112111.

It is a happy number.

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 11121122220211 - 2¹³ = 11121122212019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121122220251) 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, 1835956 + ... + 5060926.

It is an arithmetic number, because the mean of its divisors is an integer number (1391897915200).

Almost surely, 2^{11121122220211} is an apocalyptic number.

11121122220211 is a deficient number, since it is larger than the sum of its proper divisors (14061101389).

11121122220211 is a wasteful number, since it uses less digits than its factorization.

11121122220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229329.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11121122220211 its reverse (11202222112111), we get a palindrome (22323344332322).

The spelling of 11121122220211 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred eleven".