21301314420 has 48 divisors (see below), whose sum is σ = 59973234048. Its totient is φ = 5648964480.

The previous prime is 21301314401. The next prime is 21301314421. The reversal of 21301314420 is 2441310312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301314421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 969864 + ... + 991583.

It is an arithmetic number, because the mean of its divisors is an integer number (1249442376).

Almost surely, 2^21301314420 is an apocalyptic number.

21301314420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21301314420 is an abundant number, since it is smaller than the sum of its proper divisors (38671919628).

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

21301314420 is a wasteful number, since it uses less digits than its factorization.

21301314420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961640 (or 1961638 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 21301314420 its reverse (2441310312), we get a palindrome (23742624732).

The spelling of 21301314420 in words is "twenty-one billion, three hundred one million, three hundred fourteen thousand, four hundred twenty".