172201012 has 6 divisors (see below), whose sum is σ = 301351778. Its totient is φ = 86100504.

The previous prime is 172200989. The next prime is 172201021. The reversal of 172201012 is 210102271.

It can be written as a sum of positive squares in only one way, i.e., 143856036 + 28344976 = 11994^2 + 5324^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21525123 + ... + 21525130.

Almost surely, 2^172201012 is an apocalyptic number.

It is an amenable number.

172201012 is a deficient number, since it is larger than the sum of its proper divisors (129150766).

172201012 is a wasteful number, since it uses less digits than its factorization.

172201012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43050257 (or 43050255 counting only the distinct ones).

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

The square root of 172201012 is about 13122.5383215291. The cubic root of 172201012 is about 556.3463371922.

Adding to 172201012 its reverse (210102271), we get a palindrome (382303283).

The spelling of 172201012 in words is "one hundred seventy-two million, two hundred one thousand, twelve".