1011121000129 has 2 divisors, whose sum is σ = 1011121000130. Its totient is φ = 1011121000128.

The previous prime is 1011121000121. The next prime is 1011121000171. The reversal of 1011121000129 is 9210001211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 709851745729 + 301269254400 = 842527^2 + 548880^2 .

It is an emirp because it is prime and its reverse (9210001211101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011121000129 - 2³ = 1011121000121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011121000121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505560500064 + 505560500065.

It is an arithmetic number, because the mean of its divisors is an integer number (505560500065).

Almost surely, 2^{1011121000129} is an apocalyptic number.

It is an amenable number.

1011121000129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011121000129 is an equidigital number, since it uses as much as digits as its factorization.

1011121000129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 1011121000129 in words is "one trillion, eleven billion, one hundred twenty-one million, one hundred twenty-nine", and thus it is an aban number.