201121112121112 has 16 divisors (see below), whose sum is σ = 377104572181800. Its totient is φ = 100559892872640.

The previous prime is 201121112121091. The next prime is 201121112121199. The reversal of 201121112121112 is 211121211121102.

It is a super-2 number, since 2×201121112121112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201121112121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81608437 + ... + 84036772.

Almost surely, 2^{201121112121112} is an apocalyptic number.

It is an amenable number.

201121112121112 is a deficient number, since it is larger than the sum of its proper divisors (175983460060688).

201121112121112 is a wasteful number, since it uses less digits than its factorization.

201121112121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165796986 (or 165796982 counting only the distinct ones).

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

Adding to 201121112121112 its reverse (211121211121102), we get a palindrome (412242323242214).

The spelling of 201121112121112 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twelve".