12020022021 has 8 divisors (see below), whose sum is σ = 18316224064. Its totient is φ = 6868584000.

The previous prime is 12020021963. The next prime is 12020022031. The reversal of 12020022021 is 12022002021.

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

It is not a de Polignac number, because 12020022021 - 2¹⁸ = 12019759877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12020021988 and 12020022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020022031) 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, 286190980 + ... + 286191021.

It is an arithmetic number, because the mean of its divisors is an integer number (2289528008).

Almost surely, 2^12020022021 is an apocalyptic number.

It is an amenable number.

12020022021 is a deficient number, since it is larger than the sum of its proper divisors (6296202043).

12020022021 is an equidigital number, since it uses as much as digits as its factorization.

12020022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572382011.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 12020022021 its reverse (12022002021), we get a palindrome (24042024042).

The spelling of 12020022021 in words is "twelve billion, twenty million, twenty-two thousand, twenty-one".