221111010233 has 2 divisors, whose sum is σ = 221111010234. Its totient is φ = 221111010232.

The previous prime is 221111010203. The next prime is 221111010257. The reversal of 221111010233 is 332010111122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112216290169 + 108894720064 = 334987^2 + 329992^2 .

It is a cyclic number.

It is not a de Polignac number, because 221111010233 - 2¹⁴ = 221110993849 is a prime.

It is not a weakly prime, because it can be changed into another prime (221111010203) 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 as a sum of consecutive naturals, namely, 110555505116 + 110555505117.

It is an arithmetic number, because the mean of its divisors is an integer number (110555505117).

Almost surely, 2^221111010233 is an apocalyptic number.

It is an amenable number.

221111010233 is a deficient number, since it is larger than the sum of its proper divisors (1).

221111010233 is an equidigital number, since it uses as much as digits as its factorization.

221111010233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221111010233 its reverse (332010111122), we get a palindrome (553121121355).

The spelling of 221111010233 in words is "two hundred twenty-one billion, one hundred eleven million, ten thousand, two hundred thirty-three".