21112314404 has 12 divisors (see below), whose sum is σ = 37945105884. Its totient is φ = 10270855584.

The previous prime is 21112314397. The next prime is 21112314409. The reversal of 21112314404 is 40441321112.

It can be written as a sum of positive squares in 2 ways, for example, as 19252117504 + 1860196900 = 138752^2 + 43130^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21112314404.

It is not an unprimeable number, because it can be changed into a prime (21112314409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71325239 + ... + 71325534.

It is an arithmetic number, because the mean of its divisors is an integer number (3162092157).

Almost surely, 2^21112314404 is an apocalyptic number.

It is an amenable number.

21112314404 is a deficient number, since it is larger than the sum of its proper divisors (16832791480).

21112314404 is a wasteful number, since it uses less digits than its factorization.

21112314404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142650814 (or 142650812 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21112314404 its reverse (40441321112), we get a palindrome (61553635516).

The spelling of 21112314404 in words is "twenty-one billion, one hundred twelve million, three hundred fourteen thousand, four hundred four".