20123212183 has 2 divisors, whose sum is σ = 20123212184. Its totient is φ = 20123212182.

The previous prime is 20123212169. The next prime is 20123212243. The reversal of 20123212183 is 38121232102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123212183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20123252183) 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, 10061606091 + 10061606092.

It is an arithmetic number, because the mean of its divisors is an integer number (10061606092).

Almost surely, 2^20123212183 is an apocalyptic number.

20123212183 is a deficient number, since it is larger than the sum of its proper divisors (1).

20123212183 is an equidigital number, since it uses as much as digits as its factorization.

20123212183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 20123212183 its reverse (38121232102), we get a palindrome (58244444285).

The spelling of 20123212183 in words is "twenty billion, one hundred twenty-three million, two hundred twelve thousand, one hundred eighty-three".