111222211222120 has 32 divisors (see below), whose sum is σ = 250255224445320. Its totient is φ = 44487951298560.

The previous prime is 111222211222117. The next prime is 111222211222181. The reversal of 111222211222120 is 21222112222111.

It can be written as a sum of positive squares in 4 ways, for example, as 39089429639716 + 72132781582404 = 6252154^2 + 8493102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 111222211222091 and 111222211222100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27229821 + ... + 31046860.

Almost surely, 2^{111222211222120} is an apocalyptic number.

111222211222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111222211222120 is an abundant number, since it is smaller than the sum of its proper divisors (139033013223200).

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

111222211222120 is a wasteful number, since it uses less digits than its factorization.

111222211222120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58324405 (or 58324401 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 111222211222120 its reverse (21222112222111), we get a palindrome (132444323444231).

Subtracting from 111222211222120 its reverse (21222112222111), we obtain a palindrome (90000099000009).

The spelling of 111222211222120 in words is "one hundred eleven trillion, two hundred twenty-two billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty".