2001232100129 has 2 divisors, whose sum is σ = 2001232100130. Its totient is φ = 2001232100128.

The previous prime is 2001232100099. The next prime is 2001232100159. The reversal of 2001232100129 is 9210012321002.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2001232100099) and next prime (2001232100159).

It can be written as a sum of positive squares in only one way, i.e., 1422640635025 + 578591465104 = 1192745^2 + 760652^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001232100129 - 2²⁸ = 2000963664673 is a prime.

It is not a weakly prime, because it can be changed into another prime (2001232100159) 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, 1000616050064 + 1000616050065.

It is an arithmetic number, because the mean of its divisors is an integer number (1000616050065).

Almost surely, 2^{2001232100129} is an apocalyptic number.

It is an amenable number.

2001232100129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001232100129 is an equidigital number, since it uses as much as digits as its factorization.

2001232100129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 2001232100129 in words is "two trillion, one billion, two hundred thirty-two million, one hundred thousand, one hundred twenty-nine".