121202112102020 has 48 divisors (see below), whose sum is σ = 255692725602048. Its totient is φ = 48258391971840.

The previous prime is 121202112101951. The next prime is 121202112102103. The reversal of 121202112102020 is 20201211202121.

121202112102020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121202112102020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22248869 + ... + 27155411.

It is an arithmetic number, because the mean of its divisors is an integer number (5326931783376).

Almost surely, 2^{121202112102020} is an apocalyptic number.

121202112102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202112102020 is an abundant number, since it is smaller than the sum of its proper divisors (134490613500028).

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

121202112102020 is a wasteful number, since it uses less digits than its factorization.

121202112102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4912220 (or 4912218 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121202112102020 its reverse (20201211202121), we get a palindrome (141403323304141).

The spelling of 121202112102020 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred twelve million, one hundred two thousand, twenty".