201122112112 has 20 divisors (see below), whose sum is σ = 389691376360. Its totient is φ = 100556595648.

The previous prime is 201122112101. The next prime is 201122112127. The reversal of 201122112112 is 211211221102.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 109618 + ... + 643630.

It is an arithmetic number, because the mean of its divisors is an integer number (19484568818).

Almost surely, 2^201122112112 is an apocalyptic number.

It is an amenable number.

201122112112 is a deficient number, since it is larger than the sum of its proper divisors (188569264248).

201122112112 is a wasteful number, since it uses less digits than its factorization.

201122112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557560 (or 557554 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201122112112 its reverse (211211221102), we get a palindrome (412333333214).

The spelling of 201122112112 in words is "two hundred one billion, one hundred twenty-two million, one hundred twelve thousand, one hundred twelve".