201220001000221 has 8 divisors (see below), whose sum is σ = 234304691192064. Its totient is φ = 169220054749200.

The previous prime is 201220001000197. The next prime is 201220001000233. The reversal of 201220001000221 is 122000100022102.

It is a happy number.

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

It is not a de Polignac number, because 201220001000221 - 2¹⁹ = 201220000475933 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 (201220001000261) 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, 271185984805 + ... + 271185985546.

It is an arithmetic number, because the mean of its divisors is an integer number (29288086399008).

Almost surely, 2^{201220001000221} is an apocalyptic number.

It is an amenable number.

201220001000221 is a deficient number, since it is larger than the sum of its proper divisors (33084690191843).

201220001000221 is an equidigital number, since it uses as much as digits as its factorization.

201220001000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542371970411.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201220001000221 its reverse (122000100022102), we get a palindrome (323220101022323).

The spelling of 201220001000221 in words is "two hundred one trillion, two hundred twenty billion, one million, two hundred twenty-one", and thus it is an aban number.