20112243430129 has 2 divisors, whose sum is σ = 20112243430130. Its totient is φ = 20112243430128.

The previous prime is 20112243430091. The next prime is 20112243430163. The reversal of 20112243430129 is 92103434221102.

It is an a-pointer prime, because the next prime (20112243430163) can be obtained adding 20112243430129 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19822734866529 + 289508563600 = 4452273^2 + 538060^2 .

It is a cyclic number.

It is not a de Polignac number, because 20112243430129 - 2¹⁵ = 20112243397361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20112243430094 and 20112243430103.

It is not a weakly prime, because it can be changed into another prime (20112243430189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056121715064 + 10056121715065.

It is an arithmetic number, because the mean of its divisors is an integer number (10056121715065).

Almost surely, 2^{20112243430129} is an apocalyptic number.

It is an amenable number.

20112243430129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112243430129 is an equidigital number, since it uses as much as digits as its factorization.

20112243430129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 20112243430129 in words is "twenty trillion, one hundred twelve billion, two hundred forty-three million, four hundred thirty thousand, one hundred twenty-nine".