2100010012129 has 2 divisors, whose sum is σ = 2100010012130. Its totient is φ = 2100010012128.

The previous prime is 2100010012099. The next prime is 2100010012147. The reversal of 2100010012129 is 9212100100012.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1592707100625 + 507302911504 = 1262025^2 + 712252^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100010012129 - 2¹³ = 2100010003937 is a prime.

It is a super-2 number, since 2×2100010012129² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2100010012729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050005006064 + 1050005006065.

It is an arithmetic number, because the mean of its divisors is an integer number (1050005006065).

Almost surely, 2^{2100010012129} is an apocalyptic number.

It is an amenable number.

2100010012129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100010012129 is an equidigital number, since it uses as much as digits as its factorization.

2100010012129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 2100010012129 in words is "two trillion, one hundred billion, ten million, twelve thousand, one hundred twenty-nine".