201021112012 has 48 divisors (see below), whose sum is σ = 404273132032. Its totient is φ = 85674516480.

The previous prime is 201021111989. The next prime is 201021112091. The reversal of 201021112012 is 210211120102.

It is a junction number, because it is equal to n+sod(n) for n = 201021111983 and 201021112001.

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 15 ways as a sum of consecutive naturals, for example, 7685068 + ... + 7711180.

Almost surely, 2^201021112012 is an apocalyptic number.

It is an amenable number.

201021112012 is an abundant number, since it is smaller than the sum of its proper divisors (203252020020).

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

201021112012 is a wasteful number, since it uses less digits than its factorization.

201021112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27638 (or 27636 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201021112012 its reverse (210211120102), we get a palindrome (411232232114).

The spelling of 201021112012 in words is "two hundred one billion, twenty-one million, one hundred twelve thousand, twelve".