12020121210021 has 8 divisors (see below), whose sum is σ = 16027643517024. Its totient is φ = 8013006521520.

The previous prime is 12020121210011. The next prime is 12020121210029. The reversal of 12020121210021 is 12001212102021.

12020121210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12020121210021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020121210029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101835811 + ... + 101953776.

It is an arithmetic number, because the mean of its divisors is an integer number (2003455439628).

Almost surely, 2^{12020121210021} is an apocalyptic number.

It is an amenable number.

12020121210021 is a deficient number, since it is larger than the sum of its proper divisors (4007522307003).

12020121210021 is a wasteful number, since it uses less digits than its factorization.

12020121210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203809251.

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

Adding to 12020121210021 its reverse (12001212102021), we get a palindrome (24021333312042).

The spelling of 12020121210021 in words is "twelve trillion, twenty billion, one hundred twenty-one million, two hundred ten thousand, twenty-one".