20123211067 has 2 divisors, whose sum is σ = 20123211068. Its totient is φ = 20123211066.

The previous prime is 20123211029. The next prime is 20123211077. The reversal of 20123211067 is 76011232102.

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-20123211067 is a prime.

It is not a weakly prime, because it can be changed into another prime (20123211077) 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, 10061605533 + 10061605534.

It is an arithmetic number, because the mean of its divisors is an integer number (10061605534).

Almost surely, 2^20123211067 is an apocalyptic number.

20123211067 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123211067 is an equidigital number, since it uses as much as digits as its factorization.

20123211067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 20123211067 its reverse (76011232102), we get a palindrome (96134443169).

The spelling of 20123211067 in words is "twenty billion, one hundred twenty-three million, two hundred eleven thousand, sixty-seven".