221020230211 has 16 divisors (see below), whose sum is σ = 244126677600. Its totient is φ = 198426304000.

The previous prime is 221020230209. The next prime is 221020230247. The reversal of 221020230211 is 112032020122.

It is a happy number.

221020230211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221020230211 - 2¹ = 221020230209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221020230271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176475 + ... + 687883.

It is an arithmetic number, because the mean of its divisors is an integer number (15257917350).

Almost surely, 2^221020230211 is an apocalyptic number.

221020230211 is a deficient number, since it is larger than the sum of its proper divisors (23106447389).

221020230211 is a wasteful number, since it uses less digits than its factorization.

221020230211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511910.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 221020230211 its reverse (112032020122), we get a palindrome (333052250333).

The spelling of 221020230211 in words is "two hundred twenty-one billion, twenty million, two hundred thirty thousand, two hundred eleven".