20112321123143 has 2 divisors, whose sum is σ = 20112321123144. Its totient is φ = 20112321123142.

The previous prime is 20112321123079. The next prime is 20112321123161. The reversal of 20112321123143 is 34132112321102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112321123143 - 2⁶ = 20112321123079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20112321126143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056160561571 + 10056160561572.

It is an arithmetic number, because the mean of its divisors is an integer number (10056160561572).

Almost surely, 2^{20112321123143} is an apocalyptic number.

20112321123143 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112321123143 is an equidigital number, since it uses as much as digits as its factorization.

20112321123143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 20112321123143 its reverse (34132112321102), we get a palindrome (54244433444245).

The spelling of 20112321123143 in words is "twenty trillion, one hundred twelve billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred forty-three".