21413313334 has 16 divisors (see below), whose sum is σ = 36894879648. Its totient is φ = 9130548672.

The previous prime is 21413313331. The next prime is 21413313359. The reversal of 21413313334 is 43331331412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413313331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3879279 + ... + 3884794.

It is an arithmetic number, because the mean of its divisors is an integer number (2305929978).

Almost surely, 2^21413313334 is an apocalyptic number.

21413313334 is a deficient number, since it is larger than the sum of its proper divisors (15481566314).

21413313334 is a wasteful number, since it uses less digits than its factorization.

21413313334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7764279.

The product of its digits is 7776, while the sum is 28.

Adding to 21413313334 its reverse (43331331412), we get a palindrome (64744644746).

The spelling of 21413313334 in words is "twenty-one billion, four hundred thirteen million, three hundred thirteen thousand, three hundred thirty-four".