21113424213413 has 48 divisors (see below), whose sum is σ = 25634558016000. Its totient is φ = 17323317123840.

The previous prime is 21113424213407. The next prime is 21113424213521. The reversal of 21113424213413 is 31431242431112.

It is not a de Polignac number, because 21113424213413 - 2¹⁰ = 21113424212389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21113424213413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113424210413) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39984488 + ... + 40509086.

It is an arithmetic number, because the mean of its divisors is an integer number (534053292000).

Almost surely, 2^{21113424213413} is an apocalyptic number.

It is an amenable number.

21113424213413 is a deficient number, since it is larger than the sum of its proper divisors (4521133802587).

21113424213413 is a wasteful number, since it uses less digits than its factorization.

21113424213413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525010 (or 525003 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

Adding to 21113424213413 its reverse (31431242431112), we get a palindrome (52544666644525).

The spelling of 21113424213413 in words is "twenty-one trillion, one hundred thirteen billion, four hundred twenty-four million, two hundred thirteen thousand, four hundred thirteen".