21323013130129 has 2 divisors, whose sum is σ = 21323013130130. Its totient is φ = 21323013130128.

The previous prime is 21323013130093. The next prime is 21323013130141. The reversal of 21323013130129 is 92103131032312.

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., 12613862560000 + 8709150570129 = 3551600^2 + 2951127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21323013130129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21323013130129.

It is not a weakly prime, because it can be changed into another prime (21323013130229) 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, 10661506565064 + 10661506565065.

It is an arithmetic number, because the mean of its divisors is an integer number (10661506565065).

Almost surely, 2^{21323013130129} is an apocalyptic number.

It is an amenable number.

21323013130129 is a deficient number, since it is larger than the sum of its proper divisors (1).

21323013130129 is an equidigital number, since it uses as much as digits as its factorization.

21323013130129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 21323013130129 in words is "twenty-one trillion, three hundred twenty-three billion, thirteen million, one hundred thirty thousand, one hundred twenty-nine".