21120443440300 has 72 divisors (see below), whose sum is σ = 48528196809120. Its totient is φ = 7951082880000.

The previous prime is 21120443440297. The next prime is 21120443440301. The reversal of 21120443440300 is 304434402112.

It is a super-2 number, since 2×21120443440300² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21120443440301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 179306425 + ... + 179424175.

It is an arithmetic number, because the mean of its divisors is an integer number (674002733460).

Almost surely, 2^{21120443440300} is an apocalyptic number.

21120443440300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21120443440300 is an abundant number, since it is smaller than the sum of its proper divisors (27407753368820).

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

21120443440300 is a wasteful number, since it uses less digits than its factorization.

21120443440300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223291 (or 223284 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 21120443440300 its reverse (304434402112), we get a palindrome (21424877842412).

The spelling of 21120443440300 in words is "twenty-one trillion, one hundred twenty billion, four hundred forty-three million, four hundred forty thousand, three hundred".