201000201220221 has 32 divisors (see below), whose sum is σ = 304842852935040. Its totient is φ = 116782363816704.

The previous prime is 201000201220111. The next prime is 201000201220337. The reversal of 201000201220221 is 122022102000102.

It is not a de Polignac number, because 201000201220221 - 2³⁴ = 200983021351037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201000201220221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201000201220921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 462675946 + ... + 463110171.

It is an arithmetic number, because the mean of its divisors is an integer number (9526339154220).

Almost surely, 2^{201000201220221} is an apocalyptic number.

It is an amenable number.

201000201220221 is a deficient number, since it is larger than the sum of its proper divisors (103842651714819).

201000201220221 is a wasteful number, since it uses less digits than its factorization.

201000201220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925786445.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201000201220221 its reverse (122022102000102), we get a palindrome (323022303220323).

The spelling of 201000201220221 in words is "two hundred one trillion, two hundred one million, two hundred twenty thousand, two hundred twenty-one".