171207072212 has 48 divisors (see below), whose sum is σ = 331904670720. Its totient is φ = 76619109600.

The previous prime is 171207072193. The next prime is 171207072247. The reversal of 171207072212 is 212270702171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5913989 + ... + 5942867.

It is an arithmetic number, because the mean of its divisors is an integer number (6914680640).

Almost surely, 2^171207072212 is an apocalyptic number.

It is an amenable number.

171207072212 is a deficient number, since it is larger than the sum of its proper divisors (160697598508).

171207072212 is a wasteful number, since it uses less digits than its factorization.

171207072212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30972 (or 30970 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

Adding to 171207072212 its reverse (212270702171), we get a palindrome (383477774383).

The spelling of 171207072212 in words is "one hundred seventy-one billion, two hundred seven million, seventy-two thousand, two hundred twelve".