21214351202068 has 24 divisors (see below), whose sum is σ = 37596322300320. Its totient is φ = 10472707532640.

The previous prime is 21214351202059. The next prime is 21214351202069. The reversal of 21214351202068 is 86020215341212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21214351202069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19815363 + ... + 20858506.

It is an arithmetic number, because the mean of its divisors is an integer number (1566513429180).

Almost surely, 2^{21214351202068} is an apocalyptic number.

It is an amenable number.

21214351202068 is a deficient number, since it is larger than the sum of its proper divisors (16381971098252).

21214351202068 is a wasteful number, since it uses less digits than its factorization.

21214351202068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40675527 (or 40675525 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 21214351202068 in words is "twenty-one trillion, two hundred fourteen billion, three hundred fifty-one million, two hundred two thousand, sixty-eight".