20211222111233 has 2 divisors, whose sum is σ = 20211222111234. Its totient is φ = 20211222111232.

The previous prime is 20211222111209. The next prime is 20211222111263. The reversal of 20211222111233 is 33211122211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20137045954624 + 74176156609 = 4487432^2 + 272353^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211222111233 - 2⁸ = 20211222110977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20211222111199 and 20211222111208.

It is not a weakly prime, because it can be changed into another prime (20211222111263) 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 as a sum of consecutive naturals, namely, 10105611055616 + 10105611055617.

It is an arithmetic number, because the mean of its divisors is an integer number (10105611055617).

Almost surely, 2^{20211222111233} is an apocalyptic number.

It is an amenable number.

20211222111233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211222111233 is an equidigital number, since it uses as much as digits as its factorization.

20211222111233 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 23.

Adding to 20211222111233 its reverse (33211122211202), we get a palindrome (53422344322435).

The spelling of 20211222111233 in words is "twenty trillion, two hundred eleven billion, two hundred twenty-two million, one hundred eleven thousand, two hundred thirty-three".