221220002201 has 12 divisors (see below), whose sum is σ = 243170550000. Its totient is φ = 201099686040.

The previous prime is 221220002167. The next prime is 221220002207. The reversal of 221220002201 is 102200022122.

It is a de Polignac number, because none of the positive numbers 2^k-221220002201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221220002207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5120870 + ... + 5163888.

It is an arithmetic number, because the mean of its divisors is an integer number (20264212500).

Almost surely, 2^221220002201 is an apocalyptic number.

It is an amenable number.

221220002201 is a deficient number, since it is larger than the sum of its proper divisors (21950547799).

221220002201 is a wasteful number, since it uses less digits than its factorization.

221220002201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85540 (or 85529 counting only the distinct ones).

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

Adding to 221220002201 its reverse (102200022122), we get a palindrome (323420024323).

The spelling of 221220002201 in words is "two hundred twenty-one billion, two hundred twenty million, two thousand, two hundred one".