171212775152212 has 12 divisors (see below), whose sum is σ = 317247201017460. Its totient is φ = 80570717718656.

The previous prime is 171212775152203. The next prime is 171212775152213. The reversal of 171212775152212 is 212251577212171.

It can be written as a sum of positive squares in 2 ways, for example, as 53187061358916 + 118025713793296 = 7292946^2 + 10863964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171212775152213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258917464287 + ... + 1258917464422.

It is an arithmetic number, because the mean of its divisors is an integer number (26437266751455).

Almost surely, 2^{171212775152212} is an apocalyptic number.

It is an amenable number.

171212775152212 is a deficient number, since it is larger than the sum of its proper divisors (146034425865248).

171212775152212 is a wasteful number, since it uses less digits than its factorization.

171212775152212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517834928730 (or 2517834928728 counting only the distinct ones).

The product of its digits is 274400, while the sum is 46.

The spelling of 171212775152212 in words is "one hundred seventy-one trillion, two hundred twelve billion, seven hundred seventy-five million, one hundred fifty-two thousand, two hundred twelve".