200221110101221 has 4 divisors (see below), whose sum is σ = 218423029201344. Its totient is φ = 182019191001100.

The previous prime is 200221110101153. The next prime is 200221110101279. The reversal of 200221110101221 is 122101011122002.

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 200221110101221 - 2²⁷ = 200220975883493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221110101195 and 200221110101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221110108221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9100959550045 + ... + 9100959550066.

It is an arithmetic number, because the mean of its divisors is an integer number (54605757300336).

Almost surely, 2^{200221110101221} is an apocalyptic number.

It is an amenable number.

200221110101221 is a deficient number, since it is larger than the sum of its proper divisors (18201919100123).

200221110101221 is a wasteful number, since it uses less digits than its factorization.

200221110101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18201919100122.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 200221110101221 its reverse (122101011122002), we get a palindrome (322322121223223).

The spelling of 200221110101221 in words is "two hundred trillion, two hundred twenty-one billion, one hundred ten million, one hundred one thousand, two hundred twenty-one".