201121201112 has 32 divisors (see below), whose sum is σ = 406366994880. Its totient is φ = 92766455040.

The previous prime is 201121201097. The next prime is 201121201129. The reversal of 201121201112 is 211102121102.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 446189 + ... + 775452.

It is an arithmetic number, because the mean of its divisors is an integer number (12698968590).

Almost surely, 2^201121201112 is an apocalyptic number.

It is an amenable number.

201121201112 is an abundant number, since it is smaller than the sum of its proper divisors (205245793768).

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

201121201112 is a wasteful number, since it uses less digits than its factorization.

201121201112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223243 (or 1223239 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201121201112 its reverse (211102121102), we get a palindrome (412223322214).

The spelling of 201121201112 in words is "two hundred one billion, one hundred twenty-one million, two hundred one thousand, one hundred twelve".