204110012212789 has 2 divisors, whose sum is σ = 204110012212790. Its totient is φ = 204110012212788.

The previous prime is 204110012212787. The next prime is 204110012212793. The reversal of 204110012212789 is 987212210011402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139033765222564 + 65076246990225 = 11791258^2 + 8066985^2 .

It is a cyclic number.

It is not a de Polignac number, because 204110012212789 - 2¹ = 204110012212787 is a prime.

Together with 204110012212787, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204110012212781) 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, 102055006106394 + 102055006106395.

It is an arithmetic number, because the mean of its divisors is an integer number (102055006106395).

Almost surely, 2^{204110012212789} is an apocalyptic number.

It is an amenable number.

204110012212789 is a deficient number, since it is larger than the sum of its proper divisors (1).

204110012212789 is an equidigital number, since it uses as much as digits as its factorization.

204110012212789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 40.

The spelling of 204110012212789 in words is "two hundred four trillion, one hundred ten billion, twelve million, two hundred twelve thousand, seven hundred eighty-nine".