11101220111112 has 64 divisors (see below), whose sum is σ = 29422588684800. Its totient is φ = 3484253905920.

The previous prime is 11101220111063. The next prime is 11101220111153. The reversal of 11101220111112 is 21111102210111.

It is a junction number, because it is equal to n+sod(n) for n = 11101220111091 and 11101220111100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201607537 + ... + 201662592.

It is an arithmetic number, because the mean of its divisors is an integer number (459727948200).

Almost surely, 2^{11101220111112} is an apocalyptic number.

11101220111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11101220111112 is an abundant number, since it is smaller than the sum of its proper divisors (18321368573688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11101220111112 is a wasteful number, since it uses less digits than its factorization.

11101220111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403270206 (or 403270202 counting only the distinct ones).

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

Adding to 11101220111112 its reverse (21111102210111), we get a palindrome (32212322321223).

The spelling of 11101220111112 in words is "eleven trillion, one hundred one billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".