200011221221 has 12 divisors (see below), whose sum is σ = 230869953696. Its totient is φ = 169740721200.

The previous prime is 200011221217. The next prime is 200011221233. The reversal of 200011221221 is 122122110002.

It is not a de Polignac number, because 200011221221 - 2² = 200011221217 is a prime.

It is a super-2 number, since 2×200011221221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200011221196 and 200011221205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200011224221) 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 11 ways as a sum of consecutive naturals, for example, 1329095 + ... + 1471908.

It is an arithmetic number, because the mean of its divisors is an integer number (19239162808).

Almost surely, 2^200011221221 is an apocalyptic number.

It is an amenable number.

200011221221 is a deficient number, since it is larger than the sum of its proper divisors (30858732475).

200011221221 is an equidigital number, since it uses as much as digits as its factorization.

200011221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801212 (or 2801111 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200011221221 its reverse (122122110002), we get a palindrome (322133331223).

The spelling of 200011221221 in words is "two hundred billion, eleven million, two hundred twenty-one thousand, two hundred twenty-one".