20204200202129 has 2 divisors, whose sum is σ = 20204200202130. Its totient is φ = 20204200202128.

The previous prime is 20204200202071. The next prime is 20204200202141. The reversal of 20204200202129 is 92120200240202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19164493686529 + 1039706515600 = 4377727^2 + 1019660^2 .

It is a cyclic number.

It is not a de Polignac number, because 20204200202129 - 2²⁰ = 20204199153553 is a prime.

It is a super-2 number, since 2×20204200202129² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20204200202098 and 20204200202107.

It is not a weakly prime, because it can be changed into another prime (20204200202929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102100101064 + 10102100101065.

It is an arithmetic number, because the mean of its divisors is an integer number (10102100101065).

Almost surely, 2^{20204200202129} is an apocalyptic number.

It is an amenable number.

20204200202129 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204200202129 is an equidigital number, since it uses as much as digits as its factorization.

20204200202129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 20204200202129 in words is "twenty trillion, two hundred four billion, two hundred million, two hundred two thousand, one hundred twenty-nine".