210001332 has 24 divisors (see below), whose sum is σ = 492168096. Its totient is φ = 69691168.

The previous prime is 210001313. The next prime is 210001333. The reversal of 210001332 is 233100012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210001333) 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 7 ways as a sum of consecutive naturals, for example, 35823 + ... + 41270.

It is an arithmetic number, because the mean of its divisors is an integer number (20507004).

Almost surely, 2^210001332 is an apocalyptic number.

It is an amenable number.

210001332 is an abundant number, since it is smaller than the sum of its proper divisors (282166764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210001332 is a wasteful number, since it uses less digits than its factorization.

210001332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77327 (or 77325 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 210001332 is about 14491.4227044828. The cubic root of 210001332 is about 594.3934519886.

Adding to 210001332 its reverse (233100012), we get a palindrome (443101344).

The spelling of 210001332 in words is "two hundred ten million, one thousand, three hundred thirty-two".