121110220112 has 160 divisors (see below), whose sum is σ = 283481856000. Its totient is φ = 49003789824.

The previous prime is 121110220097. The next prime is 121110220139. The reversal of 121110220112 is 211022011121.

It is a Harshad number since it is a multiple of its sum of digits (14).

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, 96194939 + ... + 96196197.

It is an arithmetic number, because the mean of its divisors is an integer number (1771761600).

Almost surely, 2^121110220112 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 121110220112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141740928000).

121110220112 is an abundant number, since it is smaller than the sum of its proper divisors (162371635888).

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

121110220112 is a wasteful number, since it uses less digits than its factorization.

121110220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121110220112 its reverse (211022011121), we get a palindrome (332132231233).

The spelling of 121110220112 in words is "one hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, one hundred twelve".