112131021212 has 18 divisors (see below), whose sum is σ = 228266722152. Its totient is φ = 48056151864.

The previous prime is 112131021203. The next prime is 112131021221. The reversal of 112131021212 is 212120131211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (112131021203) and next prime (112131021221).

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 5 ways as a sum of consecutive naturals, for example, 286048328 + ... + 286048719.

It is an arithmetic number, because the mean of its divisors is an integer number (12681484564).

Almost surely, 2^112131021212 is an apocalyptic number.

It is an amenable number.

112131021212 is an abundant number, since it is smaller than the sum of its proper divisors (116135700940).

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

112131021212 is a wasteful number, since it uses less digits than its factorization.

112131021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572097065 (or 572097056 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 112131021212 its reverse (212120131211), we get a palindrome (324251152423).

The spelling of 112131021212 in words is "one hundred twelve billion, one hundred thirty-one million, twenty-one thousand, two hundred twelve".