21034303142320 has 80 divisors (see below), whose sum is σ = 52755474496032. Its totient is φ = 7753414717440.

The previous prime is 21034303142311. The next prime is 21034303142459. The reversal of 21034303142320 is 2324130343012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

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, 16436646 + ... + 17670085.

Almost surely, 2^{21034303142320} is an apocalyptic number.

21034303142320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21034303142320 is an abundant number, since it is smaller than the sum of its proper divisors (31721171353712).

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

21034303142320 is a wasteful number, since it uses less digits than its factorization.

21034303142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34107350 (or 34107344 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 21034303142320 its reverse (2324130343012), we get a palindrome (23358433485332).

The spelling of 21034303142320 in words is "twenty-one trillion, thirty-four billion, three hundred three million, one hundred forty-two thousand, three hundred twenty".