201000210000221 has 32 divisors (see below), whose sum is σ = 216412891776000. Its totient is φ = 186236120049408.

The previous prime is 201000210000169. The next prime is 201000210000241. The reversal of 201000210000221 is 122000012000102.

It is a happy number.

It is not a de Polignac number, because 201000210000221 - 2⁶ = 201000210000157 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 (201000210000241) 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, 2437240775 + ... + 2437323243.

It is an arithmetic number, because the mean of its divisors is an integer number (6762902868000).

Almost surely, 2^{201000210000221} is an apocalyptic number.

It is an amenable number.

201000210000221 is a deficient number, since it is larger than the sum of its proper divisors (15412681775779).

201000210000221 is a wasteful number, since it uses less digits than its factorization.

201000210000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107933.

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

Adding to 201000210000221 its reverse (122000012000102), we get a palindrome (323000222000323).

The spelling of 201000210000221 in words is "two hundred one trillion, two hundred ten million, two hundred twenty-one", and thus it is an aban number.