12200020021 has 16 divisors (see below), whose sum is σ = 14301360000. Its totient is φ = 10190950848.

The previous prime is 12200020003. The next prime is 12200020037. The reversal of 12200020021 is 12002000221.

12200020021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12200020021 - 2¹⁷ = 12199888949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12200020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55071 + ... + 165628.

It is an arithmetic number, because the mean of its divisors is an integer number (893835000).

Almost surely, 2^12200020021 is an apocalyptic number.

It is an amenable number.

12200020021 is a deficient number, since it is larger than the sum of its proper divisors (2101339979).

12200020021 is a wasteful number, since it uses less digits than its factorization.

12200020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220908.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12200020021 its reverse (12002000221), we get a palindrome (24202020242).

It can be divided in two parts, 122000200 and 21, that added together give a palindrome (122000221).

The spelling of 12200020021 in words is "twelve billion, two hundred million, twenty thousand, twenty-one".