21211302032 has 20 divisors (see below), whose sum is σ = 42514033020. Its totient is φ = 10239938688.

The previous prime is 21211302031. The next prime is 21211302037. The reversal of 21211302032 is 23020311212.

It can be written as a sum of positive squares in 2 ways, for example, as 15925430416 + 5285871616 = 126196^2 + 72704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21211302032.

It is not an unprimeable number, because it can be changed into a prime (21211302031) 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 3 ways as a sum of consecutive naturals, for example, 22856543 + ... + 22857470.

It is an arithmetic number, because the mean of its divisors is an integer number (2125701651).

Almost surely, 2^21211302032 is an apocalyptic number.

It is an amenable number.

21211302032 is an abundant number, since it is smaller than the sum of its proper divisors (21302730988).

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

21211302032 is a wasteful number, since it uses less digits than its factorization.

21211302032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45714050 (or 45714044 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21211302032 its reverse (23020311212), we get a palindrome (44231613244).

The spelling of 21211302032 in words is "twenty-one billion, two hundred eleven million, three hundred two thousand, thirty-two".