20023100129 has 4 divisors (see below), whose sum is σ = 20449123584. Its totient is φ = 19597076676.

The previous prime is 20023100081. The next prime is 20023100131. The reversal of 20023100129 is 92100132002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20023100129 - 2¹² = 20023096033 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20023100129.

It is not an unprimeable number, because it can be changed into a prime (20023100029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213011657 + ... + 213011750.

It is an arithmetic number, because the mean of its divisors is an integer number (5112280896).

Almost surely, 2^20023100129 is an apocalyptic number.

It is an amenable number.

20023100129 is a deficient number, since it is larger than the sum of its proper divisors (426023455).

20023100129 is an equidigital number, since it uses as much as digits as its factorization.

20023100129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426023454.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 20023100129 in words is "twenty billion, twenty-three million, one hundred thousand, one hundred twenty-nine".