210132321 has 16 divisors (see below), whose sum is σ = 320406528. Its totient is φ = 119998800.

The previous prime is 210132319. The next prime is 210132323. The reversal of 210132321 is 123231012.

It is an interprime number because it is at equal distance from previous prime (210132319) and next prime (210132323).

It is not a de Polignac number, because 210132321 - 2¹ = 210132319 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210132321.

It is not an unprimeable number, because it can be changed into a prime (210132323) 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 in 15 ways as a sum of consecutive naturals, for example, 55086 + ... + 58776.

It is an arithmetic number, because the mean of its divisors is an integer number (20025408).

Almost surely, 2^210132321 is an apocalyptic number.

210132321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210132321 is a deficient number, since it is larger than the sum of its proper divisors (110274207).

210132321 is a wasteful number, since it uses less digits than its factorization.

210132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 210132321 is about 14495.9415354781. The cubic root of 210132321 is about 594.5170112386.

Adding to 210132321 its reverse (123231012), we get a palindrome (333363333).

The spelling of 210132321 in words is "two hundred ten million, one hundred thirty-two thousand, three hundred twenty-one".