201121110112 has 48 divisors (see below), whose sum is σ = 451498707072. Its totient is φ = 87364823040.

The previous prime is 201121110107. The next prime is 201121110121. The reversal of 201121110112 is 211011121102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 201121110092 and 201121110101.

It is a congruent number.

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, 14212464 + ... + 14226607.

It is an arithmetic number, because the mean of its divisors is an integer number (9406223064).

Almost surely, 2^201121110112 is an apocalyptic number.

It is an amenable number.

201121110112 is an abundant number, since it is smaller than the sum of its proper divisors (250377596960).

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

201121110112 is a wasteful number, since it uses less digits than its factorization.

201121110112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28439111 (or 28439103 counting only the distinct ones).

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

Adding to 201121110112 its reverse (211011121102), we get a palindrome (412132231214).

The spelling of 201121110112 in words is "two hundred one billion, one hundred twenty-one million, one hundred ten thousand, one hundred twelve".