201122121112110 has 192 divisors, whose sum is σ = 606075713081280. Its totient is φ = 45803292272640.

The previous prime is 201122121112069. The next prime is 201122121112111. The reversal of 201122121112110 is 11211121221102.

It is a happy number.

201122121112110 is a `hidden beast` number, since 20 + 1 + 1 + 221 + 211 + 1 + 211 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122121112111) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 93603927 + ... + 95728466.

It is an arithmetic number, because the mean of its divisors is an integer number (3156644338965).

Almost surely, 2^{201122121112110} is an apocalyptic number.

201122121112110 is an abundant number, since it is smaller than the sum of its proper divisors (404953591969170).

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

201122121112110 is a wasteful number, since it uses less digits than its factorization.

201122121112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189332483 (or 189332480 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201122121112110 its reverse (11211121221102), we get a palindrome (212333242333212).

The spelling of 201122121112110 in words is "two hundred one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, one hundred ten".