221011000221 has 16 divisors (see below), whose sum is σ = 323395527168. Its totient is φ = 133143985200.

The previous prime is 221011000201. The next prime is 221011000237. The reversal of 221011000221 is 122000110122.

It is not a de Polignac number, because 221011000221 - 2²² = 221006805917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221011000197 and 221011000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011000201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20046295 + ... + 20057316.

It is an arithmetic number, because the mean of its divisors is an integer number (20212220448).

Almost surely, 2^221011000221 is an apocalyptic number.

It is an amenable number.

221011000221 is a deficient number, since it is larger than the sum of its proper divisors (102384526947).

221011000221 is a wasteful number, since it uses less digits than its factorization.

221011000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40103792.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221011000221 its reverse (122000110122), we get a palindrome (343011110343).

The spelling of 221011000221 in words is "two hundred twenty-one billion, eleven million, two hundred twenty-one", and thus it is an aban number.