21404401130 has 64 divisors (see below), whose sum is σ = 45136576512. Its totient is φ = 7155708480.

The previous prime is 21404401129. The next prime is 21404401163. The reversal of 21404401130 is 3110440412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879587 + ... + 903593.

It is an arithmetic number, because the mean of its divisors is an integer number (705259008).

Almost surely, 2^21404401130 is an apocalyptic number.

21404401130 is an abundant number, since it is smaller than the sum of its proper divisors (23732175382).

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

21404401130 is a wasteful number, since it uses less digits than its factorization.

21404401130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24339.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21404401130 its reverse (3110440412), we get a palindrome (24514841542).

The spelling of 21404401130 in words is "twenty-one billion, four hundred four million, four hundred one thousand, one hundred thirty".