21024242012 has 24 divisors (see below), whose sum is σ = 37174152960. Its totient is φ = 10403153600.

The previous prime is 21024241967. The next prime is 21024242033.

21024242012 is nontrivially palindromic in base 10.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 941189 + ... + 963267.

It is an arithmetic number, because the mean of its divisors is an integer number (1548923040).

Almost surely, 2^21024242012 is an apocalyptic number.

It is an amenable number.

21024242012 is a deficient number, since it is larger than the sum of its proper divisors (16149910948).

21024242012 is a wasteful number, since it uses less digits than its factorization.

21024242012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24541 (or 24539 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The spelling of 21024242012 in words is "twenty-one billion, twenty-four million, two hundred forty-two thousand, twelve".