121220222210120 has 32 divisors (see below), whose sum is σ = 297540545425920. Its totient is φ = 44080080803520.

The previous prime is 121220222210099. The next prime is 121220222210161. The reversal of 121220222210120 is 21012222022121.

121220222210120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 121220222210092 and 121220222210101.

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, 137750252072 + ... + 137750252951.

It is an arithmetic number, because the mean of its divisors is an integer number (9298142044560).

Almost surely, 2^{121220222210120} is an apocalyptic number.

121220222210120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121220222210120 is an abundant number, since it is smaller than the sum of its proper divisors (176320323215800).

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

121220222210120 is a wasteful number, since it uses less digits than its factorization.

121220222210120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275500505045 (or 275500505041 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121220222210120 its reverse (21012222022121), we get a palindrome (142232444232241).

The spelling of 121220222210120 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty".