221201200210210 has 32 divisors (see below), whose sum is σ = 434359338153984. Its totient is φ = 80436685680000.

The previous prime is 221201200210163. The next prime is 221201200210219. The reversal of 221201200210210 is 12012002102122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221201200210219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136248735 + ... + 137862685.

It is an arithmetic number, because the mean of its divisors is an integer number (13573729317312).

Almost surely, 2^{221201200210210} is an apocalyptic number.

221201200210210 is a deficient number, since it is larger than the sum of its proper divisors (213158137943774).

221201200210210 is a wasteful number, since it uses less digits than its factorization.

221201200210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859930.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221201200210210 its reverse (12012002102122), we get a palindrome (233213202312332).

It can be divided in two parts, 2 and 21201200210210, that added together give a palindrome (21201200210212).

The spelling of 221201200210210 in words is "two hundred twenty-one trillion, two hundred one billion, two hundred million, two hundred ten thousand, two hundred ten".