201201000221 has 8 divisors (see below), whose sum is σ = 217178417400. Its totient is φ = 185295071232.

The previous prime is 201201000193. The next prime is 201201000223. The reversal of 201201000221 is 122000102102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11667024196 + 189533976025 = 108014^2 + 435355^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201201000221 - 2⁶ = 201201000157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201000223) 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, 17866196 + ... + 17877453.

It is an arithmetic number, because the mean of its divisors is an integer number (27147302175).

Almost surely, 2^201201000221 is an apocalyptic number.

It is an amenable number.

201201000221 is a deficient number, since it is larger than the sum of its proper divisors (15977417179).

201201000221 is a wasteful number, since it uses less digits than its factorization.

201201000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35744095.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201201000221 its reverse (122000102102), we get a palindrome (323201102323).

The spelling of 201201000221 in words is "two hundred one billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.