2120006321129 has 2 divisors, whose sum is σ = 2120006321130. Its totient is φ = 2120006321128.

The previous prime is 2120006321101. The next prime is 2120006321183. The reversal of 2120006321129 is 9211236000212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043012835600 + 76993485529 = 1429340^2 + 277477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120006321129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120006324129) 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, 1060003160564 + 1060003160565.

It is an arithmetic number, because the mean of its divisors is an integer number (1060003160565).

Almost surely, 2^{2120006321129} is an apocalyptic number.

It is an amenable number.

2120006321129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120006321129 is an equidigital number, since it uses as much as digits as its factorization.

2120006321129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The spelling of 2120006321129 in words is "two trillion, one hundred twenty billion, six million, three hundred twenty-one thousand, one hundred twenty-nine".