21243301404 has 48 divisors (see below), whose sum is σ = 54285383040. Its totient is φ = 6425611200.

The previous prime is 21243301403. The next prime is 21243301421. The reversal of 21243301404 is 40410334212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243301403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144822 + ... + 1163229.

It is an arithmetic number, because the mean of its divisors is an integer number (1130945480).

Almost surely, 2^21243301404 is an apocalyptic number.

It is an amenable number.

21243301404 is an abundant number, since it is smaller than the sum of its proper divisors (33042081636).

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

21243301404 is a wasteful number, since it uses less digits than its factorization.

21243301404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308130 (or 2308128 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21243301404 its reverse (40410334212), we get a palindrome (61653635616).

The spelling of 21243301404 in words is "twenty-one billion, two hundred forty-three million, three hundred one thousand, four hundred four".