200221111021221 has 24 divisors (see below), whose sum is σ = 306230057078400. Its totient is φ = 125625020881536.

The previous prime is 200221111021193. The next prime is 200221111021241. The reversal of 200221111021221 is 122120111122002.

200221111021221 is a `hidden beast` number, since 200 + 2 + 211 + 1 + 10 + 21 + 221 = 666.

It is not a de Polignac number, because 200221111021221 - 2⁵ = 200221111021189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221111021194 and 200221111021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221111021241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15438571 + ... + 25274328.

It is an arithmetic number, because the mean of its divisors is an integer number (12759585711600).

Almost surely, 2^{200221111021221} is an apocalyptic number.

It is an amenable number.

200221111021221 is a deficient number, since it is larger than the sum of its proper divisors (106008946057179).

200221111021221 is a wasteful number, since it uses less digits than its factorization.

200221111021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40745065 (or 40745062 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 200221111021221 its reverse (122120111122002), we get a palindrome (322341222143223).

The spelling of 200221111021221 in words is "two hundred trillion, two hundred twenty-one billion, one hundred eleven million, twenty-one thousand, two hundred twenty-one".