12210202020021 has 32 divisors (see below), whose sum is σ = 16348286868480. Its totient is φ = 8106216418944.

The previous prime is 12210202020011. The next prime is 12210202020053. The reversal of 12210202020021 is 12002020201221.

It is not a de Polignac number, because 12210202020021 - 2¹⁵ = 12210201987253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210202020011) 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 31 ways as a sum of consecutive naturals, for example, 1591316641 + ... + 1591324313.

It is an arithmetic number, because the mean of its divisors is an integer number (510883964640).

Almost surely, 2^{12210202020021} is an apocalyptic number.

It is an amenable number.

12210202020021 is a deficient number, since it is larger than the sum of its proper divisors (4138084848459).

12210202020021 is a wasteful number, since it uses less digits than its factorization.

12210202020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10345.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 12210202020021 its reverse (12002020201221), we get a palindrome (24212222221242).

The spelling of 12210202020021 in words is "twelve trillion, two hundred ten billion, two hundred two million, twenty thousand, twenty-one".