21411310420 has 48 divisors (see below), whose sum is σ = 46942882560. Its totient is φ = 8187931136.

The previous prime is 21411310411. The next prime is 21411310439. The reversal of 21411310420 is 2401311412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 968409 + ... + 990271.

It is an arithmetic number, because the mean of its divisors is an integer number (977976720).

Almost surely, 2^21411310420 is an apocalyptic number.

21411310420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21411310420 is an abundant number, since it is smaller than the sum of its proper divisors (25531572140).

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

21411310420 is a wasteful number, since it uses less digits than its factorization.

21411310420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24024 (or 24022 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21411310420 its reverse (2401311412), we get a palindrome (23812621832).

The spelling of 21411310420 in words is "twenty-one billion, four hundred eleven million, three hundred ten thousand, four hundred twenty".