11112012111220 has 24 divisors (see below), whose sum is σ = 23336860038408. Its totient is φ = 4444493491200.

The previous prime is 11112012111203. The next prime is 11112012111241. The reversal of 11112012111220 is 2211121021111.

It can be written as a sum of positive squares in 4 ways, for example, as 166885322256 + 10945126788964 = 408516^2 + 3308342^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11112012111194 and 11112012111203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19166821 + ... + 19738060.

It is an arithmetic number, because the mean of its divisors is an integer number (972369168267).

Almost surely, 2^{11112012111220} is an apocalyptic number.

11112012111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112012111220 is an abundant number, since it is smaller than the sum of its proper divisors (12224847927188).

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

11112012111220 is a wasteful number, since it uses less digits than its factorization.

11112012111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38919171 (or 38919169 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 11112012111220 its reverse (2211121021111), we get a palindrome (13323133132331).

The spelling of 11112012111220 in words is "eleven trillion, one hundred twelve billion, twelve million, one hundred eleven thousand, two hundred twenty".