21330124441420 has 48 divisors (see below), whose sum is σ = 45639148705920. Its totient is φ = 8370933532416.

The previous prime is 21330124441399. The next prime is 21330124441517. The reversal of 21330124441420 is 2414442103312.

It is a happy number.

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, 89513554 + ... + 89751526.

It is an arithmetic number, because the mean of its divisors is an integer number (950815598040).

Almost surely, 2^{21330124441420} is an apocalyptic number.

21330124441420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21330124441420 is an abundant number, since it is smaller than the sum of its proper divisors (24309024264500).

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

21330124441420 is a wasteful number, since it uses less digits than its factorization.

21330124441420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322594 (or 322592 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 21330124441420 its reverse (2414442103312), we get a palindrome (23744566544732).

The spelling of 21330124441420 in words is "twenty-one trillion, three hundred thirty billion, one hundred twenty-four million, four hundred forty-one thousand, four hundred twenty".