221002212100211 has 4 divisors (see below), whose sum is σ = 221002242443424. Its totient is φ = 221002181757000.

The previous prime is 221002212100199. The next prime is 221002212100277. The reversal of 221002212100211 is 112001212200122.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 221002212100211 - 2⁶ = 221002212100147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002212100211.

It is not an unprimeable number, because it can be changed into a prime (221002212100711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3042161 + ... + 21242861.

It is an arithmetic number, because the mean of its divisors is an integer number (55250560610856).

Almost surely, 2^{221002212100211} is an apocalyptic number.

221002212100211 is a deficient number, since it is larger than the sum of its proper divisors (30343213).

221002212100211 is a wasteful number, since it uses less digits than its factorization.

221002212100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30343212.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221002212100211 its reverse (112001212200122), we get a palindrome (333003424300333).

The spelling of 221002212100211 in words is "two hundred twenty-one trillion, two billion, two hundred twelve million, one hundred thousand, two hundred eleven".