1000001000129 has 2 divisors, whose sum is σ = 1000001000130. Its totient is φ = 1000001000128.

The previous prime is 1000001000111. The next prime is 1000001000197. The reversal of 1000001000129 is 9210001000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652254910129 + 347746090000 = 807623^2 + 589700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000001000129 - 2⁸ = 1000000999873 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000001008129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500000500064 + 500000500065.

It is an arithmetic number, because the mean of its divisors is an integer number (500000500065).

Almost surely, 2^{1000001000129} is an apocalyptic number.

It is an amenable number.

1000001000129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000001000129 is an equidigital number, since it uses as much as digits as its factorization.

1000001000129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 14.

The spelling of 1000001000129 in words is "one trillion, one million, one hundred twenty-nine", and thus it is an aban number.