200221222221 has 12 divisors (see below), whose sum is σ = 299919855872. Its totient is φ = 133480814652.

The previous prime is 200221222219. The next prime is 200221222247. The reversal of 200221222221 is 122222122002.

200221222221 is a `hidden beast` number, since 2 + 0 + 0 + 221 + 222 + 221 = 666.

It is not a de Polignac number, because 200221222221 - 2¹ = 200221222219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200221222194 and 200221222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221222261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411977581 + ... + 411978066.

Almost surely, 2^200221222221 is an apocalyptic number.

It is an amenable number.

200221222221 is a deficient number, since it is larger than the sum of its proper divisors (99698633651).

200221222221 is an frugal number, since it uses more digits than its factorization.

200221222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823955662 (or 823955650 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 200221222221 its reverse (122222122002), we get a palindrome (322443344223).

The spelling of 200221222221 in words is "two hundred billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-one".