21301310404 has 24 divisors (see below), whose sum is σ = 41765226048. Its totient is φ = 9420726240.

The previous prime is 21301310399. The next prime is 21301310423. The reversal of 21301310404 is 40401310312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6540544 + ... + 6543799.

It is an arithmetic number, because the mean of its divisors is an integer number (1740217752).

Almost surely, 2^21301310404 is an apocalyptic number.

It is an amenable number.

21301310404 is a deficient number, since it is larger than the sum of its proper divisors (20463915644).

21301310404 is a wasteful number, since it uses less digits than its factorization.

21301310404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13084395 (or 13084393 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21301310404 its reverse (40401310312), we get a palindrome (61702620716).

It can be divided in two parts, 21301 and 310404, that added together give a triangular number (331705 = T₈₁₄).

The spelling of 21301310404 in words is "twenty-one billion, three hundred one million, three hundred ten thousand, four hundred four".