1201210010173 has 2 divisors, whose sum is σ = 1201210010174. Its totient is φ = 1201210010172.

The previous prime is 1201210010167. The next prime is 1201210010243. The reversal of 1201210010173 is 3710100121021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1177426818649 + 23783191524 = 1085093^2 + 154218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1201210010173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1201210010173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201210010113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600605005086 + 600605005087.

It is an arithmetic number, because the mean of its divisors is an integer number (600605005087).

Almost surely, 2^{1201210010173} is an apocalyptic number.

It is an amenable number.

1201210010173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201210010173 is an equidigital number, since it uses as much as digits as its factorization.

1201210010173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84, while the sum is 19.

Adding to 1201210010173 its reverse (3710100121021), we get a palindrome (4911310131194).

The spelling of 1201210010173 in words is "one trillion, two hundred one billion, two hundred ten million, ten thousand, one hundred seventy-three".