12212120210021 has 8 divisors (see below), whose sum is σ = 12671394664800. Its totient is φ = 11755390212720.

The previous prime is 12212120209997. The next prime is 12212120210053. The reversal of 12212120210021 is 12001202121221.

12212120210021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12212120210021 - 2¹⁰ = 12212120208997 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 (12212120210071) 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, 636104591 + ... + 636123788.

It is an arithmetic number, because the mean of its divisors is an integer number (1583924333100).

Almost surely, 2^{12212120210021} is an apocalyptic number.

It is an amenable number.

12212120210021 is a deficient number, since it is larger than the sum of its proper divisors (459274454779).

12212120210021 is a wasteful number, since it uses less digits than its factorization.

12212120210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272228739.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12212120210021 its reverse (12001202121221), we get a palindrome (24213322331242).

The spelling of 12212120210021 in words is "twelve trillion, two hundred twelve billion, one hundred twenty million, two hundred ten thousand, twenty-one".