21101400304 has 20 divisors (see below), whose sum is σ = 43035751240. Its totient is φ = 9995400000.

The previous prime is 21101400233. The next prime is 21101400371. The reversal of 21101400304 is 40300410112.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34705947 + ... + 34706554.

It is an arithmetic number, because the mean of its divisors is an integer number (2151787562).

Almost surely, 2^21101400304 is an apocalyptic number.

It is an amenable number.

21101400304 is an abundant number, since it is smaller than the sum of its proper divisors (21934350936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101400304 is a wasteful number, since it uses less digits than its factorization.

21101400304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69412528 (or 69412522 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21101400304 its reverse (40300410112), we get a palindrome (61401810416).

The spelling of 21101400304 in words is "twenty-one billion, one hundred one million, four hundred thousand, three hundred four".