201212120212221 has 8 divisors (see below), whose sum is σ = 269833594736160. Its totient is φ = 133366029581552.

The previous prime is 201212120212199. The next prime is 201212120212247. The reversal of 201212120212221 is 122212021212102.

201212120212221 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 201212120212221 - 2⁷ = 201212120212093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212120214221) 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, 193845972711 + ... + 193845973748.

It is an arithmetic number, because the mean of its divisors is an integer number (33729199342020).

Almost surely, 2^{201212120212221} is an apocalyptic number.

It is an amenable number.

201212120212221 is a deficient number, since it is larger than the sum of its proper divisors (68621474523939).

201212120212221 is a wasteful number, since it uses less digits than its factorization.

201212120212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387691946635.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 201212120212221 its reverse (122212021212102), we get a palindrome (323424141424323).

The spelling of 201212120212221 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty million, two hundred twelve thousand, two hundred twenty-one".