21323233210 has 32 divisors (see below), whose sum is σ = 38905952400. Its totient is φ = 8413278720.

The previous prime is 21323233123. The next prime is 21323233241. The reversal of 21323233210 is 1233232312.

It can be written as a sum of positive squares in 8 ways, for example, as 45468049 + 21277765161 = 6743^2 + 145869^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 346236 + ... + 403144.

Almost surely, 2^21323233210 is an apocalyptic number.

21323233210 is a deficient number, since it is larger than the sum of its proper divisors (17582719190).

21323233210 is a wasteful number, since it uses less digits than its factorization.

21323233210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57426.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21323233210 its reverse (1233232312), we get a palindrome (22556465522).

The spelling of 21323233210 in words is "twenty-one billion, three hundred twenty-three million, two hundred thirty-three thousand, two hundred ten".