20112322123 has 2 divisors, whose sum is σ = 20112322124. Its totient is φ = 20112322122.

The previous prime is 20112322099. The next prime is 20112322129. The reversal of 20112322123 is 32122321102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112322123 - 2⁵ = 20112322091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20112322123.

It is not a weakly prime, because it can be changed into another prime (20112322129) 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, 10056161061 + 10056161062.

It is an arithmetic number, because the mean of its divisors is an integer number (10056161062).

Almost surely, 2^20112322123 is an apocalyptic number.

20112322123 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112322123 is an equidigital number, since it uses as much as digits as its factorization.

20112322123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20112322123 its reverse (32122321102), we get a palindrome (52234643225).

The spelling of 20112322123 in words is "twenty billion, one hundred twelve million, three hundred twenty-two thousand, one hundred twenty-three".