21068886012 has 48 divisors (see below), whose sum is σ = 52137765792. Its totient is φ = 6599024640.

The previous prime is 21068885989. The next prime is 21068886023.

21068886012 is nontrivially palindromic in base 10.

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, 40812 + ... + 209292.

It is an arithmetic number, because the mean of its divisors is an integer number (1086203454).

Almost surely, 2^21068886012 is an apocalyptic number.

It is an amenable number.

21068886012 is an abundant number, since it is smaller than the sum of its proper divisors (31068879780).

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

21068886012 is a wasteful number, since it uses less digits than its factorization.

21068886012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169118 (or 169116 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 21068886012 in words is "twenty-one billion, sixty-eight million, eight hundred eighty-six thousand, twelve".