121000110020 has 24 divisors (see below), whose sum is σ = 254122482264. Its totient is φ = 48395805696.

The previous prime is 121000110001. The next prime is 121000110031. The reversal of 121000110020 is 20011000121.

121000110020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11184754564 + 109815355456 = 105758^2 + 331384^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25517 + ... + 492596.

It is an arithmetic number, because the mean of its divisors is an integer number (10588436761).

Almost surely, 2^121000110020 is an apocalyptic number.

121000110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121000110020 is an abundant number, since it is smaller than the sum of its proper divisors (133122372244).

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

121000110020 is a wasteful number, since it uses less digits than its factorization.

121000110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529799 (or 529797 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121000110020 its reverse (20011000121), we get a palindrome (141011110141).

The spelling of 121000110020 in words is "one hundred twenty-one billion, one hundred ten thousand, twenty".