111212110022120 has 32 divisors (see below), whose sum is σ = 250512569461800. Its totient is φ = 44434120113408.

The previous prime is 111212110022113. The next prime is 111212110022129. The reversal of 111212110022120 is 21220011212111.

It can be written as a sum of positive squares in 4 ways, for example, as 106774236918244 + 4437873103876 = 10333162^2 + 2106626^2 .

It is not an unprimeable number, because it can be changed into a prime (111212110022129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1585086215 + ... + 1585156374.

Almost surely, 2^{111212110022120} is an apocalyptic number.

111212110022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111212110022120 is an abundant number, since it is smaller than the sum of its proper divisors (139300459439680).

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

111212110022120 is a wasteful number, since it uses less digits than its factorization.

111212110022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170243477 (or 3170243473 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111212110022120 its reverse (21220011212111), we get a palindrome (132432121234231).

The spelling of 111212110022120 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred ten million, twenty-two thousand, one hundred twenty".