201121121211112 has 32 divisors (see below), whose sum is σ = 377615094364800. Its totient is φ = 100423852113600.

The previous prime is 201121121211067. The next prime is 201121121211137. The reversal of 201121121211112 is 211112121121102.

It is a self number, because there is not a number n which added to its sum of digits gives 201121121211112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12416437 + ... + 23588347.

It is an arithmetic number, because the mean of its divisors is an integer number (11800471698900).

Almost surely, 2^{201121121211112} is an apocalyptic number.

It is an amenable number.

201121121211112 is a deficient number, since it is larger than the sum of its proper divisors (176493973153688).

201121121211112 is a wasteful number, since it uses less digits than its factorization.

201121121211112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11174977 (or 11174973 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 201121121211112 its reverse (211112121121102), we get a palindrome (412233242332214).

The spelling of 201121121211112 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twelve".