121210002010120 has 64 divisors (see below), whose sum is σ = 276541646814720. Its totient is φ = 47805442020864.

The previous prime is 121210002010117. The next prime is 121210002010151. The reversal of 121210002010120 is 21010200012121.

It is a self number, because there is not a number n which added to its sum of digits gives 121210002010120.

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 15 ways as a sum of consecutive naturals, for example, 3457257 + ... + 15949063.

It is an arithmetic number, because the mean of its divisors is an integer number (4320963231480).

Almost surely, 2^{121210002010120} is an apocalyptic number.

121210002010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121210002010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138270823407360).

121210002010120 is an abundant number, since it is smaller than the sum of its proper divisors (155331644804600).

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

121210002010120 is a wasteful number, since it uses less digits than its factorization.

121210002010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495214 (or 12495210 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121210002010120 its reverse (21010200012121), we get a palindrome (142220202022241).

The spelling of 121210002010120 in words is "one hundred twenty-one trillion, two hundred ten billion, two million, ten thousand, one hundred twenty".