21201032 has 16 divisors (see below), whose sum is σ = 41480640. Its totient is φ = 10139536.

The previous prime is 21201031. The next prime is 21201041. The reversal of 21201032 is 23010212.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57428 + ... + 57795.

It is an arithmetic number, because the mean of its divisors is an integer number (2592540).

Almost surely, 2^21201032 is an apocalyptic number.

It is an amenable number.

21201032 is a deficient number, since it is larger than the sum of its proper divisors (20279608).

21201032 is a wasteful number, since it uses less digits than its factorization.

21201032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115252 (or 115248 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21201032 is about 4604.4578399634. The cubic root of 21201032 is about 276.7699915679.

Adding to 21201032 its reverse (23010212), we get a palindrome (44211244).

The spelling of 21201032 in words is "twenty-one million, two hundred one thousand, thirty-two".