212389975 has 12 divisors (see below), whose sum is σ = 300987184. Its totient is φ = 145638720.

The previous prime is 212389951. The next prime is 212389987. The reversal of 212389975 is 579983212.

It is not a de Polignac number, because 212389975 - 2¹¹ = 212387927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 606654 + ... + 607003.

Almost surely, 2^212389975 is an apocalyptic number.

212389975 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

212389975 is a deficient number, since it is larger than the sum of its proper divisors (88597209).

212389975 is a wasteful number, since it uses less digits than its factorization.

212389975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213674 (or 1213669 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 212389975 is about 14573.6054221322. The cubic root of 212389975 is about 596.6385876046.

It can be divided in two parts, 21238 and 9975, that added together give a palindrome (31213).

The spelling of 212389975 in words is "two hundred twelve million, three hundred eighty-nine thousand, nine hundred seventy-five".