201221200210211 has 16 divisors (see below), whose sum is σ = 203142490177536. Its totient is φ = 199305330640416.

The previous prime is 201221200210171. The next prime is 201221200210223. The reversal of 201221200210211 is 112012002122102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201221200210211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201221200210211.

It is not an unprimeable number, because it can be changed into a prime (201221200410211) 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, 325335425 + ... + 325953341.

It is an arithmetic number, because the mean of its divisors is an integer number (12696405636096).

Almost surely, 2^{201221200210211} is an apocalyptic number.

201221200210211 is a deficient number, since it is larger than the sum of its proper divisors (1921289967325).

201221200210211 is a wasteful number, since it uses less digits than its factorization.

201221200210211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622298.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201221200210211 its reverse (112012002122102), we get a palindrome (313233202332313).

The spelling of 201221200210211 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred million, two hundred ten thousand, two hundred eleven".