20221231193 has 2 divisors, whose sum is σ = 20221231194. Its totient is φ = 20221231192.

The previous prime is 20221231181. The next prime is 20221231229. The reversal of 20221231193 is 39113212202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11153049664 + 9068181529 = 105608^2 + 95227^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221231193 - 2¹⁴ = 20221214809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20221234193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110615596 + 10110615597.

It is an arithmetic number, because the mean of its divisors is an integer number (10110615597).

Almost surely, 2^20221231193 is an apocalyptic number.

It is an amenable number.

20221231193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221231193 is an equidigital number, since it uses as much as digits as its factorization.

20221231193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 20221231193 its reverse (39113212202), we get a palindrome (59334443395).

The spelling of 20221231193 in words is "twenty billion, two hundred twenty-one million, two hundred thirty-one thousand, one hundred ninety-three".