21323133404 has 24 divisors (see below), whose sum is σ = 38178452256. Its totient is φ = 10417320000.

The previous prime is 21323133373. The next prime is 21323133413. The reversal of 21323133404 is 40433132312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252527 + ... + 326214.

It is an arithmetic number, because the mean of its divisors is an integer number (1590768844).

Almost surely, 2^21323133404 is an apocalyptic number.

It is an amenable number.

21323133404 is a deficient number, since it is larger than the sum of its proper divisors (16855318852).

21323133404 is a wasteful number, since it uses less digits than its factorization.

21323133404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578957 (or 578955 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21323133404 its reverse (40433132312), we get a palindrome (61756265716).

The spelling of 21323133404 in words is "twenty-one billion, three hundred twenty-three million, one hundred thirty-three thousand, four hundred four".