2221200221 has 8 divisors (see below), whose sum is σ = 2232740160. Its totient is φ = 2209676128.

The previous prime is 2221200209. The next prime is 2221200239. The reversal of 2221200221 is 1220021222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2221200221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221200196 and 2221200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221200271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361745 + ... + 367833.

It is an arithmetic number, because the mean of its divisors is an integer number (279092520).

Almost surely, 2^2221200221 is an apocalyptic number.

It is an amenable number.

2221200221 is a deficient number, since it is larger than the sum of its proper divisors (11539939).

2221200221 is a wasteful number, since it uses less digits than its factorization.

2221200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7923.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2221200221 is about 47129.6108725714. The cubic root of 2221200221 is about 1304.7557997384.

Adding to 2221200221 its reverse (1220021222), we get a palindrome (3441221443).

The spelling of 2221200221 in words is "two billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".