110120121220 has 12 divisors (see below), whose sum is σ = 231252254604. Its totient is φ = 44048048480.

The previous prime is 110120121161. The next prime is 110120121227. The reversal of 110120121220 is 22121021011.

It can be written as a sum of positive squares in 2 ways, for example, as 80736676164 + 29383445056 = 284142^2 + 171416^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 110120121220.

It is not an unprimeable number, because it can be changed into a prime (110120121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2753003011 + ... + 2753003050.

It is an arithmetic number, because the mean of its divisors is an integer number (19271021217).

Almost surely, 2^110120121220 is an apocalyptic number.

110120121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110120121220 is an abundant number, since it is smaller than the sum of its proper divisors (121132133384).

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

110120121220 is a wasteful number, since it uses less digits than its factorization.

110120121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506006070 (or 5506006068 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 110120121220 its reverse (22121021011), we get a palindrome (132241142231).

The spelling of 110120121220 in words is "one hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty".