11112110121220 has 48 divisors (see below), whose sum is σ = 23592325317120. Its totient is φ = 4396048729344.

The previous prime is 11112110121179. The next prime is 11112110121221. The reversal of 11112110121220 is 2212101121111.

It is a super-2 number, since 2×11112110121220² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11112110121194 and 11112110121203.

It is not an unprimeable number, because it can be changed into a prime (11112110121221) 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, 2978265 + ... + 5576224.

It is an arithmetic number, because the mean of its divisors is an integer number (491506777440).

Almost surely, 2^{11112110121220} is an apocalyptic number.

11112110121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112110121220 is an abundant number, since it is smaller than the sum of its proper divisors (12480215195900).

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

11112110121220 is a wasteful number, since it uses less digits than its factorization.

11112110121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555212 (or 8555210 counting only the distinct ones).

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

Adding to 11112110121220 its reverse (2212101121111), we get a palindrome (13324211242331).

The spelling of 11112110121220 in words is "eleven trillion, one hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, two hundred twenty".