112121112210212 has 96 divisors (see below), whose sum is σ = 232758219133440. Its totient is φ = 46238290560000.

The previous prime is 112121112210199. The next prime is 112121112210229. The reversal of 112121112210212 is 212012211121211.

It is a happy number.

It is a super-2 number, since 2×112121112210212² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1727538962 + ... + 1727603862.

It is an arithmetic number, because the mean of its divisors is an integer number (2424564782640).

Almost surely, 2^{112121112210212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112121112210212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116379109566720).

112121112210212 is an abundant number, since it is smaller than the sum of its proper divisors (120637106923228).

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

112121112210212 is a wasteful number, since it uses less digits than its factorization.

112121112210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72093 (or 72091 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 112121112210212 its reverse (212012211121211), we get a palindrome (324133323331423).

The spelling of 112121112210212 in words is "one hundred twelve trillion, one hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, two hundred twelve".