2126122607129 has 2 divisors, whose sum is σ = 2126122607130. Its totient is φ = 2126122607128.

The previous prime is 2126122607123. The next prime is 2126122607171. The reversal of 2126122607129 is 9217062216212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2027852896729 + 98269710400 = 1424027^2 + 313480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126122607129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126122607123) 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, 1063061303564 + 1063061303565.

It is an arithmetic number, because the mean of its divisors is an integer number (1063061303565).

Almost surely, 2^{2126122607129} is an apocalyptic number.

It is an amenable number.

2126122607129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126122607129 is an equidigital number, since it uses as much as digits as its factorization.

2126122607129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 2126122607129 in words is "two trillion, one hundred twenty-six billion, one hundred twenty-two million, six hundred seven thousand, one hundred twenty-nine".