221033020211 has 4 divisors (see below), whose sum is σ = 221034128592. Its totient is φ = 221031911832.

The previous prime is 221033020189. The next prime is 221033020213. The reversal of 221033020211 is 112020330122.

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, and also an emirpimes, since its reverse is a distinct semiprime: 112020330122 = 2 ⋅56010165061.

It is a cyclic number.

It is not a de Polignac number, because 221033020211 - 2⁶ = 221033020147 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 221033020211.

It is not an unprimeable number, because it can be changed into a prime (221033020213) 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, 163031 + ... + 684576.

It is an arithmetic number, because the mean of its divisors is an integer number (55258532148).

Almost surely, 2^221033020211 is an apocalyptic number.

221033020211 is a deficient number, since it is larger than the sum of its proper divisors (1108381).

221033020211 is an equidigital number, since it uses as much as digits as its factorization.

221033020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108380.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 221033020211 its reverse (112020330122), we get a palindrome (333053350333).

The spelling of 221033020211 in words is "two hundred twenty-one billion, thirty-three million, twenty thousand, two hundred eleven".