21112665433016 has 32 divisors (see below), whose sum is σ = 40574880251280. Its totient is φ = 10295817312000.

The previous prime is 21112665433009. The next prime is 21112665433021. The reversal of 21112665433016 is 61033456621112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194942405 + ... + 195050676.

Almost surely, 2^{21112665433016} is an apocalyptic number.

It is an amenable number.

21112665433016 is a deficient number, since it is larger than the sum of its proper divisors (19462214818264).

21112665433016 is a wasteful number, since it uses less digits than its factorization.

21112665433016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389993255 (or 389993251 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 21112665433016 in words is "twenty-one trillion, one hundred twelve billion, six hundred sixty-five million, four hundred thirty-three thousand, sixteen".