12020121100120 has 64 divisors (see below), whose sum is σ = 31539676392000. Its totient is φ = 4121184372480.

The previous prime is 12020121100081. The next prime is 12020121100121. The reversal of 12020121100120 is 2100112102021.

It is a super-2 number, since 2×12020121100120² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12020121100120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020121100121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438037341 + ... + 438064780.

It is an arithmetic number, because the mean of its divisors is an integer number (492807443625).

Almost surely, 2^{12020121100120} is an apocalyptic number.

12020121100120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020121100120 is an abundant number, since it is smaller than the sum of its proper divisors (19519555291880).

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

12020121100120 is an equidigital number, since it uses as much as digits as its factorization.

12020121100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876102153 (or 876102135 counting only the distinct ones).

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

Adding to 12020121100120 its reverse (2100112102021), we get a palindrome (14120233202141).

The spelling of 12020121100120 in words is "twelve trillion, twenty billion, one hundred twenty-one million, one hundred thousand, one hundred twenty".