217132012 has 12 divisors (see below), whose sum is σ = 382105080. Its totient is φ = 107959136.

The previous prime is 217131989. The next prime is 217132031. The reversal of 217132012 is 210231712.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150913 + ... + 152344.

It is an arithmetic number, because the mean of its divisors is an integer number (31842090).

Almost surely, 2^217132012 is an apocalyptic number.

It is an amenable number.

217132012 is a deficient number, since it is larger than the sum of its proper divisors (164973068).

217132012 is a wasteful number, since it uses less digits than its factorization.

217132012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303440 (or 303438 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 217132012 is about 14735.3999606390. The cubic root of 217132012 is about 601.0463335089.

Adding to 217132012 its reverse (210231712), we get a palindrome (427363724).

The spelling of 217132012 in words is "two hundred seventeen million, one hundred thirty-two thousand, twelve".