212201022200221 has 16 divisors (see below), whose sum is σ = 215888389758720. Its totient is φ = 208516697737920.

The previous prime is 212201022200171. The next prime is 212201022200273. The reversal of 212201022200221 is 122002220102212.

It is a cyclic number.

It is not a de Polignac number, because 212201022200221 - 2⁷ = 212201022200093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201022203221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1425423331 + ... + 1425572191.

It is an arithmetic number, because the mean of its divisors is an integer number (13493024359920).

Almost surely, 2^{212201022200221} is an apocalyptic number.

It is an amenable number.

212201022200221 is a deficient number, since it is larger than the sum of its proper divisors (3687367558499).

212201022200221 is a wasteful number, since it uses less digits than its factorization.

212201022200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158916.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 212201022200221 its reverse (122002220102212), we get a palindrome (334203242302433).

The spelling of 212201022200221 in words is "two hundred twelve trillion, two hundred one billion, twenty-two million, two hundred thousand, two hundred twenty-one".