12020231210121 has 32 divisors (see below), whose sum is σ = 17882709465600. Its totient is φ = 7979770026000.

The previous prime is 12020231210111. The next prime is 12020231210129. The reversal of 12020231210121 is 12101213202021.

12020231210121 is a `hidden beast` number, since 1 + 20 + 202 + 312 + 10 + 121 = 666.

12020231210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12020231210121 - 2²⁵ = 12020197655689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12020231210094 and 12020231210103.

It is not an unprimeable number, because it can be changed into a prime (12020231210129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30347170 + ... + 30740708.

It is an arithmetic number, because the mean of its divisors is an integer number (558834670800).

Almost surely, 2^{12020231210121} is an apocalyptic number.

It is an amenable number.

12020231210121 is a deficient number, since it is larger than the sum of its proper divisors (5862478255479).

12020231210121 is a wasteful number, since it uses less digits than its factorization.

12020231210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398306 (or 398300 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12020231210121 its reverse (12101213202021), we get a palindrome (24121444412142).

The spelling of 12020231210121 in words is "twelve trillion, twenty billion, two hundred thirty-one million, two hundred ten thousand, one hundred twenty-one".