121121000220 has 96 divisors (see below), whose sum is σ = 370029494016. Its totient is φ = 29357913600.

The previous prime is 121121000213. The next prime is 121121000237. The reversal of 121121000220 is 22000121121.

121121000220 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 121121000196 and 121121000205.

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, 5771787 + ... + 5792733.

It is an arithmetic number, because the mean of its divisors is an integer number (3854473896).

Almost surely, 2^121121000220 is an apocalyptic number.

121121000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121000220 is an abundant number, since it is smaller than the sum of its proper divisors (248908493796).

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

121121000220 is a wasteful number, since it uses less digits than its factorization.

121121000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29731 (or 29729 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 121121000220 its reverse (22000121121), we get a palindrome (143121121341).

The spelling of 121121000220 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty", and thus it is an aban number.