201212202021 has 8 divisors (see below), whose sum is σ = 271678922880. Its totient is φ = 132443474592.

The previous prime is 201212202001. The next prime is 201212202047. The reversal of 201212202021 is 120202212102.

201212202021 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 not a de Polignac number, because 201212202021 - 2¹¹ = 201212199973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212202001) 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, 424498080 + ... + 424498553.

It is an arithmetic number, because the mean of its divisors is an integer number (33959865360).

Almost surely, 2^201212202021 is an apocalyptic number.

It is an amenable number.

201212202021 is a deficient number, since it is larger than the sum of its proper divisors (70466720859).

201212202021 is an equidigital number, since it uses as much as digits as its factorization.

201212202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 848996715.

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

Adding to 201212202021 its reverse (120202212102), we get a palindrome (321414414123).

The spelling of 201212202021 in words is "two hundred one billion, two hundred twelve million, two hundred two thousand, twenty-one".