210201212212221 has 8 divisors (see below), whose sum is σ = 280268495150400. Its totient is φ = 140134035374432.

The previous prime is 210201212212217. The next prime is 210201212212231. The reversal of 210201212212221 is 122212212102012.

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 210201212212221 - 2² = 210201212212217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201212212231) 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, 21781200 + ... + 29913593.

It is an arithmetic number, because the mean of its divisors is an integer number (35033561893800).

Almost surely, 2^{210201212212221} is an apocalyptic number.

It is an amenable number.

210201212212221 is a deficient number, since it is larger than the sum of its proper divisors (70067282938179).

210201212212221 is a wasteful number, since it uses less digits than its factorization.

210201212212221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53050195.

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

Adding to 210201212212221 its reverse (122212212102012), we get a palindrome (332413424314233).

The spelling of 210201212212221 in words is "two hundred ten trillion, two hundred one billion, two hundred twelve million, two hundred twelve thousand, two hundred twenty-one".