21032303210 has 8 divisors (see below), whose sum is σ = 37858145796. Its totient is φ = 8412921280.

The previous prime is 21032303209. The next prime is 21032303263. The reversal of 21032303210 is 1230323012.

It can be written as a sum of positive squares in 2 ways, for example, as 19303489969 + 1728813241 = 138937^2 + 41579^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1051615151 + ... + 1051615170.

Almost surely, 2^21032303210 is an apocalyptic number.

21032303210 is a deficient number, since it is larger than the sum of its proper divisors (16825842586).

21032303210 is a wasteful number, since it uses less digits than its factorization.

21032303210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103230328.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21032303210 its reverse (1230323012), we get a palindrome (22262626222).

The spelling of 21032303210 in words is "twenty-one billion, thirty-two million, three hundred three thousand, two hundred ten".