12020210021 has 8 divisors (see below), whose sum is σ = 12641593344. Its totient is φ = 11407057200.

The previous prime is 12020210011. The next prime is 12020210039. The reversal of 12020210021 is 12001202021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12020210021 - 2¹⁴ = 12020193637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020209984 and 12020210011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020210011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054630 + ... + 2060471.

It is an arithmetic number, because the mean of its divisors is an integer number (1580199168).

Almost surely, 2^12020210021 is an apocalyptic number.

It is an amenable number.

12020210021 is a deficient number, since it is larger than the sum of its proper divisors (621383323).

12020210021 is a wasteful number, since it uses less digits than its factorization.

12020210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4115251.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12020210021 its reverse (12001202021), we get a palindrome (24021412042).

The spelling of 12020210021 in words is "twelve billion, twenty million, two hundred ten thousand, twenty-one".