112121120212 has 12 divisors (see below), whose sum is σ = 196221935700. Its totient is φ = 56057710016.

The previous prime is 112121120161. The next prime is 112121120219. The reversal of 112121120212 is 212021121211.

It can be written as a sum of positive squares in 2 ways, for example, as 57194635716 + 54926484496 = 239154^2 + 234364^2 .

It is a super-2 number, since 2×112121120212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112121120219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622753 + ... + 782344.

It is an arithmetic number, because the mean of its divisors is an integer number (16351827975).

Almost surely, 2^112121120212 is an apocalyptic number.

It is an amenable number.

112121120212 is a deficient number, since it is larger than the sum of its proper divisors (84100815488).

112121120212 is a wasteful number, since it uses less digits than its factorization.

112121120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425050 (or 1425048 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 112121120212 its reverse (212021121211), we get a palindrome (324142241423).

Subtracting 112121120212 from its reverse (212021121211), we obtain a palindrome (99900000999).

The spelling of 112121120212 in words is "one hundred twelve billion, one hundred twenty-one million, one hundred twenty thousand, two hundred twelve".