21320141200 has 30 divisors (see below), whose sum is σ = 51221640194. Its totient is φ = 8528056320.

The previous prime is 21320141179. The next prime is 21320141233. The reversal of 21320141200 is 214102312.

It can be written as a sum of positive squares in 3 ways, for example, as 5030213776 + 16289927424 = 70924^2 + 127632^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

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 5 ways as a sum of consecutive naturals, for example, 26649777 + ... + 26650576.

Almost surely, 2^21320141200 is an apocalyptic number.

21320141200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21320141200 is an abundant number, since it is smaller than the sum of its proper divisors (29901498994).

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

21320141200 is a wasteful number, since it uses less digits than its factorization.

21320141200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53300371 (or 53300360 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21320141200 its reverse (214102312), we get a palindrome (21534243512).

The spelling of 21320141200 in words is "twenty-one billion, three hundred twenty million, one hundred forty-one thousand, two hundred".