21323003210 has 8 divisors (see below), whose sum is σ = 38381405796. Its totient is φ = 8529201280.

The previous prime is 21323003189. The next prime is 21323003237. The reversal of 21323003210 is 1230032312.

It can be written as a sum of positive squares in 2 ways, for example, as 18346973401 + 2976029809 = 135451^2 + 54553^2 .

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

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, 1066150151 + ... + 1066150170.

Almost surely, 2^21323003210 is an apocalyptic number.

21323003210 is a deficient number, since it is larger than the sum of its proper divisors (17058402586).

21323003210 is a wasteful number, since it uses less digits than its factorization.

21323003210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2132300328.

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

Adding to 21323003210 its reverse (1230032312), we get a palindrome (22553035522).

The spelling of 21323003210 in words is "twenty-one billion, three hundred twenty-three million, three thousand, two hundred ten".