221220200011 has 4 divisors (see below), whose sum is σ = 228848482800. Its totient is φ = 213591917224.

The previous prime is 221220199957. The next prime is 221220200017. The reversal of 221220200011 is 110002022122.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221220200011 - 2¹⁹ = 221219675723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221220199964 and 221220200000.

It is not an unprimeable number, because it can be changed into a prime (221220200017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3814141351 + ... + 3814141408.

It is an arithmetic number, because the mean of its divisors is an integer number (57212120700).

Almost surely, 2^221220200011 is an apocalyptic number.

221220200011 is a deficient number, since it is larger than the sum of its proper divisors (7628282789).

221220200011 is an equidigital number, since it uses as much as digits as its factorization.

221220200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7628282788.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221220200011 its reverse (110002022122), we get a palindrome (331222222133).

The spelling of 221220200011 in words is "two hundred twenty-one billion, two hundred twenty million, two hundred thousand, eleven".