21410220340404 has 72 divisors (see below), whose sum is σ = 61852173609408. Its totient is φ = 6117163683840.

The previous prime is 21410220340393. The next prime is 21410220340409. The reversal of 21410220340404 is 40404302201412.

21410220340404 is a `hidden beast` number, since 2 + 1 + 4 + 1 + 0 + 220 + 34 + 0 + 404 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21410220340409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67256499 + ... + 67574085.

Almost surely, 2^{21410220340404} is an apocalyptic number.

It is an amenable number.

21410220340404 is an abundant number, since it is smaller than the sum of its proper divisors (40441953269004).

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

21410220340404 is a wasteful number, since it uses less digits than its factorization.

21410220340404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585125 (or 585120 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 21410220340404 its reverse (40404302201412), we get a palindrome (61814522541816).

The spelling of 21410220340404 in words is "twenty-one trillion, four hundred ten billion, two hundred twenty million, three hundred forty thousand, four hundred four".