12012120121020 has 24 divisors (see below), whose sum is σ = 33633936339024. Its totient is φ = 3203232032256.

The previous prime is 12012120120971. The next prime is 12012120121073. The reversal of 12012120121020 is 2012102121021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100101000949 + ... + 100101001068.

It is an arithmetic number, because the mean of its divisors is an integer number (1401414014126).

Almost surely, 2^{12012120121020} is an apocalyptic number.

12012120121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012120121020 is an abundant number, since it is smaller than the sum of its proper divisors (21621816218004).

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

12012120121020 is a wasteful number, since it uses less digits than its factorization.

12012120121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200202002029 (or 200202002027 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12012120121020 its reverse (2012102121021), we get a palindrome (14024222242041).

The spelling of 12012120121020 in words is "twelve trillion, twelve billion, one hundred twenty million, one hundred twenty-one thousand, twenty".