201210121000221 has 8 divisors (see below), whose sum is σ = 268281870611040. Its totient is φ = 134139226028112.

The previous prime is 201210121000169. The next prime is 201210121000237. The reversal of 201210121000221 is 122000121012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201210121000221 - 2⁶ = 201210121000157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201210121000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210121000621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213110131 + ... + 214052208.

It is an arithmetic number, because the mean of its divisors is an integer number (33535233826380).

Almost surely, 2^{201210121000221} is an apocalyptic number.

It is an amenable number.

201210121000221 is a deficient number, since it is larger than the sum of its proper divisors (67071749610819).

201210121000221 is a wasteful number, since it uses less digits than its factorization.

201210121000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427319355.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201210121000221 its reverse (122000121012102), we get a palindrome (323210242012323).

The spelling of 201210121000221 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one", and thus it is an aban number.