221130233211 has 32 divisors (see below), whose sum is σ = 299683883520. Its totient is φ = 145024229376.

The previous prime is 221130233201. The next prime is 221130233227. The reversal of 221130233211 is 112332031122.

It is not a de Polignac number, because 221130233211 - 2⁵ = 221130233179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221130233201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20209380 + ... + 20220318.

It is an arithmetic number, because the mean of its divisors is an integer number (9365121360).

Almost surely, 2^221130233211 is an apocalyptic number.

221130233211 is a deficient number, since it is larger than the sum of its proper divisors (78553650309).

221130233211 is a wasteful number, since it uses less digits than its factorization.

221130233211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 221130233211 its reverse (112332031122), we get a palindrome (333462264333).

The spelling of 221130233211 in words is "two hundred twenty-one billion, one hundred thirty million, two hundred thirty-three thousand, two hundred eleven".