21024442012 has 24 divisors (see below), whose sum is σ = 42053590656. Its totient is φ = 9009466608.

The previous prime is 21024441989. The next prime is 21024442099.

21024442012 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, 247623 + ... + 321505.

It is an arithmetic number, because the mean of its divisors is an integer number (1752232944).

Almost surely, 2^21024442012 is an apocalyptic number.

It is an amenable number.

21024442012 is an abundant number, since it is smaller than the sum of its proper divisors (21029148644).

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

21024442012 is a wasteful number, since it uses less digits than its factorization.

21024442012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84057 (or 84055 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The spelling of 21024442012 in words is "twenty-one billion, twenty-four million, four hundred forty-two thousand, twelve".