201211101112 has 128 divisors (see below), whose sum is σ = 461728512000. Its totient is φ = 80325273600.

The previous prime is 201211101109. The next prime is 201211101127. The reversal of 201211101112 is 211101112102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201211101092 and 201211101101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31628812 + ... + 31635172.

It is an arithmetic number, because the mean of its divisors is an integer number (3607254000).

Almost surely, 2^201211101112 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 201211101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230864256000).

201211101112 is an abundant number, since it is smaller than the sum of its proper divisors (260517410888).

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

201211101112 is a wasteful number, since it uses less digits than its factorization.

201211101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7037 (or 7033 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 201211101112 its reverse (211101112102), we get a palindrome (412312213214).

The spelling of 201211101112 in words is "two hundred one billion, two hundred eleven million, one hundred one thousand, one hundred twelve".