12020002110021 has 4 divisors (see below), whose sum is σ = 16026669480032. Its totient is φ = 8013334740012.

The previous prime is 12020002110001. The next prime is 12020002110043. The reversal of 12020002110021 is 12001120002021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12020002110021 - 2³⁰ = 12018928368197 is a prime.

It is a super-3 number, since 3×12020002110021³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020002109979 and 12020002110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020002110001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2003333685001 + ... + 2003333685006.

It is an arithmetic number, because the mean of its divisors is an integer number (4006667370008).

Almost surely, 2^{12020002110021} is an apocalyptic number.

It is an amenable number.

12020002110021 is a deficient number, since it is larger than the sum of its proper divisors (4006667370011).

12020002110021 is an equidigital number, since it uses as much as digits as its factorization.

12020002110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4006667370010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12020002110021 its reverse (12001120002021), we get a palindrome (24021122112042).

The spelling of 12020002110021 in words is "twelve trillion, twenty billion, two million, one hundred ten thousand, twenty-one".