221000000200221 has 16 divisors (see below), whose sum is σ = 321745982376960. Its totient is φ = 133817962131120.

The previous prime is 221000000200201. The next prime is 221000000200229. The reversal of 221000000200221 is 122002000000122.

It is not a de Polignac number, because 221000000200221 - 2²² = 220999996005917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221000000200197 and 221000000200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000000200229) 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, 3035761291 + ... + 3035834088.

It is an arithmetic number, because the mean of its divisors is an integer number (20109123898560).

Almost surely, 2^{221000000200221} is an apocalyptic number.

It is an amenable number.

221000000200221 is a deficient number, since it is larger than the sum of its proper divisors (100745982176739).

221000000200221 is a wasteful number, since it uses less digits than its factorization.

221000000200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6071596496.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221000000200221 its reverse (122002000000122), we get a palindrome (343002000200343).

The spelling of 221000000200221 in words is "two hundred twenty-one trillion, two hundred thousand, two hundred twenty-one".