21334143200320 has 28 divisors (see below), whose sum is σ = 50801928496524. Its totient is φ = 8533657280000.

The previous prime is 21334143200303. The next prime is 21334143200341. The reversal of 21334143200320 is 2300234143312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14835192315904 + 6498950884416 = 3851648^2 + 2549304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33334598431 + ... + 33334599070.

Almost surely, 2^{21334143200320} is an apocalyptic number.

21334143200320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21334143200320 is an abundant number, since it is smaller than the sum of its proper divisors (29467785296204).

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

21334143200320 is an equidigital number, since it uses as much as digits as its factorization.

21334143200320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66669197518 (or 66669197508 counting only the distinct ones).

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

Adding to 21334143200320 its reverse (2300234143312), we get a palindrome (23634377343632).

The spelling of 21334143200320 in words is "twenty-one trillion, three hundred thirty-four billion, one hundred forty-three million, two hundred thousand, three hundred twenty".