212221102210201 has 8 divisors (see below), whose sum is σ = 247488165843200. Its totient is φ = 181903801894164.

The previous prime is 212221102210181. The next prime is 212221102210207. The reversal of 212221102210201 is 102012201122212.

It is not a de Polignac number, because 212221102210201 - 2¹⁵ = 212221102177433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212221102210207) 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, 309360206961 + ... + 309360207646.

It is an arithmetic number, because the mean of its divisors is an integer number (30936020730400).

Almost surely, 2^{212221102210201} is an apocalyptic number.

It is an amenable number.

212221102210201 is a deficient number, since it is larger than the sum of its proper divisors (35267063632999).

212221102210201 is an frugal number, since it uses more digits than its factorization.

212221102210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618720414628 (or 618720414614 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212221102210201 its reverse (102012201122212), we get a palindrome (314233303332413).

The spelling of 212221102210201 in words is "two hundred twelve trillion, two hundred twenty-one billion, one hundred two million, two hundred ten thousand, two hundred one".