111222120210120 has 128 divisors (see below), whose sum is σ = 370866556368000. Its totient is φ = 29649139603200.

The previous prime is 111222120210101. The next prime is 111222120210163. The reversal of 111222120210120 is 21012021222111.

111222120210120 is a `hidden beast` number, since 1 + 1 + 122 + 212 + 0 + 210 + 120 = 666.

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 = 111222120210093 and 111222120210102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14346031 + ... + 20694270.

It is an arithmetic number, because the mean of its divisors is an integer number (2897394971625).

Almost surely, 2^{111222120210120} is an apocalyptic number.

111222120210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222120210120 is an abundant number, since it is smaller than the sum of its proper divisors (259644436157880).

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

111222120210120 is a wasteful number, since it uses less digits than its factorization.

111222120210120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35043260 (or 35043250 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111222120210120 its reverse (21012021222111), we get a palindrome (132234141432231).

The spelling of 111222120210120 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, two hundred ten thousand, one hundred twenty".