11220211011111 has 8 divisors (see below), whose sum is σ = 15442871069184. Its totient is φ = 7238845813560.

The previous prime is 11220211011083. The next prime is 11220211011127. The reversal of 11220211011111 is 11111011202211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11220211011111 - 2⁹ = 11220211010599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220211011511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60323715021 + ... + 60323715206.

It is an arithmetic number, because the mean of its divisors is an integer number (1930358883648).

Almost surely, 2^{11220211011111} is an apocalyptic number.

11220211011111 is a deficient number, since it is larger than the sum of its proper divisors (4222660058073).

11220211011111 is a wasteful number, since it uses less digits than its factorization.

11220211011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120647430261.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11220211011111 its reverse (11111011202211), we get a palindrome (22331222213322).

The spelling of 11220211011111 in words is "eleven trillion, two hundred twenty billion, two hundred eleven million, eleven thousand, one hundred eleven".