11111220011101 has 16 divisors (see below), whose sum is σ = 13110475399168. Its totient is φ = 9215057372400.

The previous prime is 11111220011063. The next prime is 11111220011147. The reversal of 11111220011101 is 10111002211111.

It is a cyclic number.

It is not a de Polignac number, because 11111220011101 - 2⁹ = 11111220010589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111220011201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3271785 + ... + 5738206.

It is an arithmetic number, because the mean of its divisors is an integer number (819404712448).

Almost surely, 2^{11111220011101} is an apocalyptic number.

It is an amenable number.

11111220011101 is a deficient number, since it is larger than the sum of its proper divisors (1999255388067).

11111220011101 is an equidigital number, since it uses as much as digits as its factorization.

11111220011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015712.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11111220011101 its reverse (10111002211111), we get a palindrome (21222222222212).

The spelling of 11111220011101 in words is "eleven trillion, one hundred eleven billion, two hundred twenty million, eleven thousand, one hundred one".