201010001173 has 2 divisors, whose sum is σ = 201010001174. Its totient is φ = 201010001172.

The previous prime is 201010001147. The next prime is 201010001281. The reversal of 201010001173 is 371100010102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200540065489 + 469935684 = 447817^2 + 21678^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201010001173 is a prime.

It is a super-2 number, since 2×201010001173² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010001113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505000586 + 100505000587.

It is an arithmetic number, because the mean of its divisors is an integer number (100505000587).

Almost surely, 2^201010001173 is an apocalyptic number.

It is an amenable number.

201010001173 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010001173 is an equidigital number, since it uses as much as digits as its factorization.

201010001173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

Adding to 201010001173 its reverse (371100010102), we get a palindrome (572110011275).

The spelling of 201010001173 in words is "two hundred one billion, ten million, one thousand, one hundred seventy-three".