121121020110020 has 24 divisors (see below), whose sum is σ = 290690448264384. Its totient is φ = 41527206894816.

The previous prime is 121121020110011. The next prime is 121121020110037. The reversal of 121121020110020 is 20011020121121.

121121020110020 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 (14).

It is a junction number, because it is equal to n+sod(n) for n = 121121020109977 and 121121020110004.

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, 432575071682 + ... + 432575071961.

It is an arithmetic number, because the mean of its divisors is an integer number (12112102011016).

Almost surely, 2^{121121020110020} is an apocalyptic number.

121121020110020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121121020110020 is an abundant number, since it is smaller than the sum of its proper divisors (169569428154364).

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

121121020110020 is a wasteful number, since it uses less digits than its factorization.

121121020110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865150143659 (or 865150143657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121121020110020 its reverse (20011020121121), we get a palindrome (141132040231141).

The spelling of 121121020110020 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty million, one hundred ten thousand, twenty".