172210012 has 24 divisors (see below), whose sum is σ = 332101616. Its totient is φ = 77632128.

The previous prime is 172210009. The next prime is 172210013. The reversal of 172210012 is 210012271.

172210012 is a modest number, since divided by 210012 gives 172 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172210013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36273 + ... + 40744.

Almost surely, 2^172210012 is an apocalyptic number.

It is an amenable number.

172210012 is a deficient number, since it is larger than the sum of its proper divisors (159891604).

172210012 is a wasteful number, since it uses less digits than its factorization.

172210012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77077 (or 77075 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 172210012 is about 13122.8812385086. The cubic root of 172210012 is about 556.3560294113.

Adding to 172210012 its reverse (210012271), we get a palindrome (382222283).

The spelling of 172210012 in words is "one hundred seventy-two million, two hundred ten thousand, twelve".