21023032210 has 8 divisors (see below), whose sum is σ = 37841457996. Its totient is φ = 8409212880.

The previous prime is 21023032193. The next prime is 21023032223. The reversal of 21023032210 is 1223032012.

It can be written as a sum of positive squares in 2 ways, for example, as 20449286001 + 573746209 = 143001^2 + 23953^2 .

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

It is an unprimeable number.

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, 1051151601 + ... + 1051151620.

Almost surely, 2^21023032210 is an apocalyptic number.

21023032210 is a deficient number, since it is larger than the sum of its proper divisors (16818425786).

21023032210 is a wasteful number, since it uses less digits than its factorization.

21023032210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102303228.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21023032210 its reverse (1223032012), we get a palindrome (22246064222).

The spelling of 21023032210 in words is "twenty-one billion, twenty-three million, thirty-two thousand, two hundred ten".