12100001010120 has 384 divisors, whose sum is σ = 42588180311040. Its totient is φ = 3083941175040.

The previous prime is 12100001010079. The next prime is 12100001010131. The reversal of 12100001010120 is 2101010000121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 292172215 + ... + 292213625.

It is an arithmetic number, because the mean of its divisors is an integer number (110906719560).

Almost surely, 2^{12100001010120} is an apocalyptic number.

12100001010120 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 12100001010120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21294090155520).

12100001010120 is an abundant number, since it is smaller than the sum of its proper divisors (30488179300920).

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

12100001010120 is a wasteful number, since it uses less digits than its factorization.

12100001010120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42767 (or 42751 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12100001010120 its reverse (2101010000121), we get a palindrome (14201011010241).

The spelling of 12100001010120 in words is "twelve trillion, one hundred billion, one million, ten thousand, one hundred twenty".