212401232 has 10 divisors (see below), whose sum is σ = 411527418. Its totient is φ = 106200608.

The previous prime is 212401177. The next prime is 212401237. The reversal of 212401232 is 232104212.

It can be written as a sum of positive squares in only one way, i.e., 185940496 + 26460736 = 13636^2 + 5144^2 .

It is a super-2 number, since 2×212401232² = 90228566710235648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212401232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212401237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6637523 + ... + 6637554.

Almost surely, 2^212401232 is an apocalyptic number.

It is an amenable number.

212401232 is a deficient number, since it is larger than the sum of its proper divisors (199126186).

212401232 is a wasteful number, since it uses less digits than its factorization.

212401232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13275085 (or 13275079 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 212401232 is about 14573.9916289258. The cubic root of 212401232 is about 596.6491283437.

Adding to 212401232 its reverse (232104212), we get a palindrome (444505444).

The spelling of 212401232 in words is "two hundred twelve million, four hundred one thousand, two hundred thirty-two".