221000021002201 has 12 divisors (see below), whose sum is σ = 257110314563280. Its totient is φ = 189407473393320.

The previous prime is 221000021002139. The next prime is 221000021002217. The reversal of 221000021002201 is 102200120000122.

It is a happy number.

It is not a de Polignac number, because 221000021002201 - 2¹⁵ = 221000020969433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221000021002601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250937331 + ... + 251816488.

It is an arithmetic number, because the mean of its divisors is an integer number (21425859546940).

Almost surely, 2^{221000021002201} is an apocalyptic number.

It is an amenable number.

221000021002201 is a deficient number, since it is larger than the sum of its proper divisors (36110293561079).

221000021002201 is an equidigital number, since it uses as much as digits as its factorization.

221000021002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502762804 (or 502762797 counting only the distinct ones).

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

Adding to 221000021002201 its reverse (102200120000122), we get a palindrome (323200141002323).

The spelling of 221000021002201 in words is "two hundred twenty-one trillion, twenty-one million, two thousand, two hundred one".