11112111222120 has 96 divisors (see below), whose sum is σ = 36264213877320. Its totient is φ = 2950934077440.

The previous prime is 11112111222101. The next prime is 11112111222137. The reversal of 11112111222120 is 2122211121111.

It is a happy number.

11112111222120 is a `hidden beast` number, since 1 + 111 + 211 + 1 + 222 + 120 = 666.

11112111222120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9404808359076 + 1707302863044 = 3066726^2 + 1306638^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11112111222093 and 11112111222102.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63952609 + ... + 64126128.

Almost surely, 2^{11112111222120} is an apocalyptic number.

11112111222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112111222120 is an abundant number, since it is smaller than the sum of its proper divisors (25152102655200).

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

11112111222120 is a wasteful number, since it uses less digits than its factorization.

11112111222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128078995 (or 128078988 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11112111222120 its reverse (2122211121111), we get a palindrome (13234322343231).

The spelling of 11112111222120 in words is "eleven trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twenty".