102100000129 has 4 divisors (see below), whose sum is σ = 102100684500. Its totient is φ = 102099315760.

The previous prime is 102100000127. The next prime is 102100000139. The reversal of 102100000129 is 921000001201.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 33351160129 + 68748840000 = 182623^2 + 262200^2 .

It is a cyclic number.

It is not a de Polignac number, because 102100000129 - 2¹ = 102100000127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102100000127) 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, 12562 + ... + 452059.

It is an arithmetic number, because the mean of its divisors is an integer number (25525171125).

Almost surely, 2^102100000129 is an apocalyptic number.

It is an amenable number.

102100000129 is a deficient number, since it is larger than the sum of its proper divisors (684371).

102100000129 is an equidigital number, since it uses as much as digits as its factorization.

102100000129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684370.

The product of its (nonzero) digits is 36, while the sum is 16.

The spelling of 102100000129 in words is "one hundred two billion, one hundred million, one hundred twenty-nine", and thus it is an aban number.