21075301148 has 24 divisors (see below), whose sum is σ = 40633037424. Its totient is φ = 9484832000.

The previous prime is 21075301141. The next prime is 21075301151. The reversal of 21075301148 is 84110357012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21075301141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2366765 + ... + 2375652.

It is an arithmetic number, because the mean of its divisors is an integer number (1693043226).

Almost surely, 2^21075301148 is an apocalyptic number.

It is an amenable number.

21075301148 is a deficient number, since it is larger than the sum of its proper divisors (19557736276).

21075301148 is a wasteful number, since it uses less digits than its factorization.

21075301148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742533 (or 4742531 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 32.

It can be divided in two parts, 21075 and 301148, that added together give a palindrome (322223).

The spelling of 21075301148 in words is "twenty-one billion, seventy-five million, three hundred one thousand, one hundred forty-eight".