11211222120011 has 8 divisors (see below), whose sum is σ = 11379753317184. Its totient is φ = 11042726203080.

The previous prime is 11211222119947. The next prime is 11211222120031. The reversal of 11211222120011 is 11002122211211.

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 11211222120011 - 2⁶ = 11211222119947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11211222120031) 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, 8179385 + ... + 9451178.

It is an arithmetic number, because the mean of its divisors is an integer number (1422469164648).

Almost surely, 2^{11211222120011} is an apocalyptic number.

11211222120011 is a deficient number, since it is larger than the sum of its proper divisors (168531197173).

11211222120011 is an equidigital number, since it uses as much as digits as its factorization.

11211222120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640121.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 11211222120011 its reverse (11002122211211), we get a palindrome (22213344331222).

It can be divided in two parts, 11211 and 222120011, that added together give a palindrome (222131222).

The spelling of 11211222120011 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-two million, one hundred twenty thousand, eleven".