200001012101221 has 4 divisors (see below), whose sum is σ = 210527381159200. Its totient is φ = 189474643043244.

The previous prime is 200001012101171. The next prime is 200001012101227. The reversal of 200001012101221 is 122101210100002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200001012101221 - 2¹⁵ = 200001012068453 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 (200001012101227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5263184528961 + ... + 5263184528998.

It is an arithmetic number, because the mean of its divisors is an integer number (52631845289800).

Almost surely, 2^{200001012101221} is an apocalyptic number.

It is an amenable number.

200001012101221 is a deficient number, since it is larger than the sum of its proper divisors (10526369057979).

200001012101221 is a wasteful number, since it uses less digits than its factorization.

200001012101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526369057978.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 200001012101221 its reverse (122101210100002), we get a palindrome (322102222201223).

The spelling of 200001012101221 in words is "two hundred trillion, one billion, twelve million, one hundred one thousand, two hundred twenty-one".