121020020110220 has 144 divisors (see below), whose sum is σ = 323956736990208. Its totient is φ = 37551374663040.

The previous prime is 121020020110207. The next prime is 121020020110243. The reversal of 121020020110220 is 22011020020121.

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 = 121020020110195 and 121020020110204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22767242 + ... + 27575121.

It is an arithmetic number, because the mean of its divisors is an integer number (2249699562432).

Almost surely, 2^{121020020110220} is an apocalyptic number.

121020020110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020020110220 is an abundant number, since it is smaller than the sum of its proper divisors (202936716879988).

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

121020020110220 is a wasteful number, since it uses less digits than its factorization.

121020020110220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50342620 (or 50342611 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121020020110220 its reverse (22011020020121), we get a palindrome (143031040130341).

Subtracting from 121020020110220 its reverse (22011020020121), we obtain a palindrome (99009000090099).

The spelling of 121020020110220 in words is "one hundred twenty-one trillion, twenty billion, twenty million, one hundred ten thousand, two hundred twenty".