21182775118012 has 48 divisors (see below), whose sum is σ = 40031249086080. Its totient is φ = 9777217060800.

The previous prime is 21182775118007. The next prime is 21182775118033. The reversal of 21182775118012 is 21081157728112.

It is a congruent number.

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, 20855314 + ... + 21847417.

It is an arithmetic number, because the mean of its divisors is an integer number (833984355960).

Almost surely, 2^{21182775118012} is an apocalyptic number.

It is an amenable number.

21182775118012 is a deficient number, since it is larger than the sum of its proper divisors (18848473968068).

21182775118012 is a wasteful number, since it uses less digits than its factorization.

21182775118012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42702922 (or 42702920 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 46.

The spelling of 21182775118012 in words is "twenty-one trillion, one hundred eighty-two billion, seven hundred seventy-five million, one hundred eighteen thousand, twelve".