201212120112 has 80 divisors (see below), whose sum is σ = 538281166848. Its totient is φ = 64699614720.

The previous prime is 201212120111. The next prime is 201212120117. The reversal of 201212120112 is 211021212102.

It is a junction number, because it is equal to n+sod(n) for n = 201212120091 and 201212120100.

It is not an unprimeable number, because it can be changed into a prime (201212120111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249733 + ... + 681755.

Almost surely, 2^201212120112 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 201212120112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269140583424).

201212120112 is an abundant number, since it is smaller than the sum of its proper divisors (337069046736).

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

201212120112 is a wasteful number, since it uses less digits than its factorization.

201212120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432378 (or 432372 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201212120112 its reverse (211021212102), we get a palindrome (412233332214).

The spelling of 201212120112 in words is "two hundred one billion, two hundred twelve million, one hundred twenty thousand, one hundred twelve".