121110222220 has 48 divisors (see below), whose sum is σ = 277647461280. Its totient is φ = 44105043456.

The previous prime is 121110222217. The next prime is 121110222221. The reversal of 121110222220 is 22222011121.

It is a happy number.

121110222220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121110222194 and 121110222203.

It is not an unprimeable number, because it can be changed into a prime (121110222221) 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 15 ways as a sum of consecutive naturals, for example, 3171490 + ... + 3209449.

It is an arithmetic number, because the mean of its divisors is an integer number (5784322110).

Almost surely, 2^121110222220 is an apocalyptic number.

121110222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121110222220 is an abundant number, since it is smaller than the sum of its proper divisors (156537239060).

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

121110222220 is a wasteful number, since it uses less digits than its factorization.

121110222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6381034 (or 6381032 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121110222220 its reverse (22222011121), we get a palindrome (143332233341).

The spelling of 121110222220 in words is "one hundred twenty-one billion, one hundred ten million, two hundred twenty-two thousand, two hundred twenty".