21112665430316 has 24 divisors (see below), whose sum is σ = 37886507191680. Its totient is φ = 10288468713600.

The previous prime is 21112665430303. The next prime is 21112665430319. The reversal of 21112665430316 is 61303456621112.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (21112665430319) 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, 64789931 + ... + 65114978.

It is an arithmetic number, because the mean of its divisors is an integer number (1578604466320).

Almost surely, 2^{21112665430316} is an apocalyptic number.

It is an amenable number.

21112665430316 is a deficient number, since it is larger than the sum of its proper divisors (16773841761364).

21112665430316 is a wasteful number, since it uses less digits than its factorization.

21112665430316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129905945 (or 129905943 counting only the distinct ones).

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

The spelling of 21112665430316 in words is "twenty-one trillion, one hundred twelve billion, six hundred sixty-five million, four hundred thirty thousand, three hundred sixteen".