2221031233 has 2 divisors, whose sum is σ = 2221031234. Its totient is φ = 2221031232.

The previous prime is 2221031231. The next prime is 2221031237. The reversal of 2221031233 is 3321301222.

2221031233 is nontrivially palindromic in base 6.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2212103089 + 8928144 = 47033^2 + 2988^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221031233 - 2¹ = 2221031231 is a prime.

Together with 2221031231, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2221031233.

It is not a weakly prime, because it can be changed into another prime (2221031231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110515616 + 1110515617.

It is an arithmetic number, because the mean of its divisors is an integer number (1110515617).

Almost surely, 2^2221031233 is an apocalyptic number.

It is an amenable number.

2221031233 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221031233 is an equidigital number, since it uses as much as digits as its factorization.

2221031233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2221031233 is about 47127.8180377577. The cubic root of 2221031233 is about 1304.7227104709.

Adding to 2221031233 its reverse (3321301222), we get a palindrome (5542332455).

The spelling of 2221031233 in words is "two billion, two hundred twenty-one million, thirty-one thousand, two hundred thirty-three".