2200221121221 has 12 divisors (see below), whose sum is σ = 3192348734848. Its totient is φ = 1460236437864.

The previous prime is 2200221121213. The next prime is 2200221121247. The reversal of 2200221121221 is 1221211220022.

It is a happy number.

2200221121221 is a `hidden beast` number, since 2 + 200 + 221 + 1 + 21 + 221 = 666.

It is not a de Polignac number, because 2200221121221 - 2³ = 2200221121213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2200221121194 and 2200221121203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2200221121321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548134795 + ... + 548138808.

Almost surely, 2^{2200221121221} is an apocalyptic number.

It is an amenable number.

2200221121221 is a deficient number, since it is larger than the sum of its proper divisors (992127613627).

2200221121221 is a wasteful number, since it uses less digits than its factorization.

2200221121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096273832 (or 1096273829 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2200221121221 its reverse (1221211220022), we get a palindrome (3421432341243).

The spelling of 2200221121221 in words is "two trillion, two hundred billion, two hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".