12101001012120 has 64 divisors (see below), whose sum is σ = 36304262784000. Its totient is φ = 3226821625728.

The previous prime is 12101001012077. The next prime is 12101001012131. The reversal of 12101001012120 is 2121010010121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12101001012096 and 12101001012105.

It is a congruent number.

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, 1751961 + ... + 5222199.

It is an arithmetic number, because the mean of its divisors is an integer number (567254106000).

Almost surely, 2^{12101001012120} is an apocalyptic number.

12101001012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12101001012120 is an abundant number, since it is smaller than the sum of its proper divisors (24203261771880).

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

12101001012120 is a wasteful number, since it uses less digits than its factorization.

12101001012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3499312 (or 3499308 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 12101001012120 its reverse (2121010010121), we get a palindrome (14222011022241).

The spelling of 12101001012120 in words is "twelve trillion, one hundred one billion, one million, twelve thousand, one hundred twenty".