21441214404 has 48 divisors (see below), whose sum is σ = 55867728000. Its totient is φ = 7111149408.

The previous prime is 21441214393. The next prime is 21441214433. The reversal of 21441214404 is 40441214412.

It is a happy number.

21441214404 is a `hidden beast` number, since 2 + 1 + 4 + 41 + 214 + 404 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477327 + ... + 520310.

It is an arithmetic number, because the mean of its divisors is an integer number (1163911000).

Almost surely, 2^21441214404 is an apocalyptic number.

It is an amenable number.

21441214404 is an abundant number, since it is smaller than the sum of its proper divisors (34426513596).

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

21441214404 is a wasteful number, since it uses less digits than its factorization.

21441214404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997849 (or 997841 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 21441214404 its reverse (40441214412), we get a palindrome (61882428816).

The spelling of 21441214404 in words is "twenty-one billion, four hundred forty-one million, two hundred fourteen thousand, four hundred four".