21300011420 has 24 divisors (see below), whose sum is σ = 44732979648. Its totient is φ = 8519441600.

The previous prime is 21300011413. The next prime is 21300011461. The reversal of 21300011420 is 2411000312.

It is a junction number, because it is equal to n+sod(n) for n = 21300011395 and 21300011404.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 416450 + ... + 464790.

It is an arithmetic number, because the mean of its divisors is an integer number (1863874152).

Almost surely, 2^21300011420 is an apocalyptic number.

21300011420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21300011420 is an abundant number, since it is smaller than the sum of its proper divisors (23432968228).

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

21300011420 is a wasteful number, since it uses less digits than its factorization.

21300011420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70381 (or 70379 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21300011420 its reverse (2411000312), we get a palindrome (23711011732).

The spelling of 21300011420 in words is "twenty-one billion, three hundred million, eleven thousand, four hundred twenty".