212532321 has 16 divisors (see below), whose sum is σ = 286940736. Its totient is φ = 139915776.

The previous prime is 212532301. The next prime is 212532361. The reversal of 212532321 is 123235212.

It is not a de Polignac number, because 212532321 - 2⁵ = 212532289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212532301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105106 + ... + 107108.

It is an arithmetic number, because the mean of its divisors is an integer number (17933796).

Almost surely, 2^212532321 is an apocalyptic number.

It is an amenable number.

212532321 is a deficient number, since it is larger than the sum of its proper divisors (74408415).

212532321 is a wasteful number, since it uses less digits than its factorization.

212532321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2432.

The product of its digits is 720, while the sum is 21.

The square root of 212532321 is about 14578.4882961163. The cubic root of 212532321 is about 596.7718489948.

Adding to 212532321 its reverse (123235212), we get a palindrome (335767533).

The spelling of 212532321 in words is "two hundred twelve million, five hundred thirty-two thousand, three hundred twenty-one".