22231221203 has 2 divisors, whose sum is σ = 22231221204. Its totient is φ = 22231221202.

The previous prime is 22231221179. The next prime is 22231221209. The reversal of 22231221203 is 30212213222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22231221203 is a prime.

It is not a weakly prime, because it can be changed into another prime (22231221209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11115610601 + 11115610602.

It is an arithmetic number, because the mean of its divisors is an integer number (11115610602).

Almost surely, 2^22231221203 is an apocalyptic number.

22231221203 is a deficient number, since it is larger than the sum of its proper divisors (1).

22231221203 is an equidigital number, since it uses as much as digits as its factorization.

22231221203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22231221203 its reverse (30212213222), we get a palindrome (52443434425).

The spelling of 22231221203 in words is "twenty-two billion, two hundred thirty-one million, two hundred twenty-one thousand, two hundred three".