121222112122112 has 36 divisors (see below), whose sum is σ = 241982791621620. Its totient is φ = 60608027332608.

The previous prime is 121222112122081. The next prime is 121222112122217. The reversal of 121222112122112 is 211221211222121.

It can be written as a sum of positive squares in 2 ways, for example, as 19809478214656 + 101412633907456 = 4450784^2 + 10070384^2 .

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6693533 + ... + 16948380.

Almost surely, 2^{121222112122112} is an apocalyptic number.

It is an amenable number.

121222112122112 is a deficient number, since it is larger than the sum of its proper divisors (120760679499508).

121222112122112 is an equidigital number, since it uses as much as digits as its factorization.

121222112122112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23661958 (or 23661944 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

Adding to 121222112122112 its reverse (211221211222121), we get a palindrome (332443323344233).

The spelling of 121222112122112 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twelve".