21110124116512 has 12 divisors (see below), whose sum is σ = 41560556854446. Its totient is φ = 10555062058240.

The previous prime is 21110124116401. The next prime is 21110124116563. The reversal of 21110124116512 is 21561142101112.

It can be written as a sum of positive squares in only one way, i.e., 15696144490896 + 5413979625616 = 3961836^2 + 2326796^2 .

It is a super-2 number, since 2×21110124116512² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329845689289 + ... + 329845689352.

Almost surely, 2^{21110124116512} is an apocalyptic number.

It is an amenable number.

21110124116512 is a deficient number, since it is larger than the sum of its proper divisors (20450432737934).

21110124116512 is an equidigital number, since it uses as much as digits as its factorization.

21110124116512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659691378651 (or 659691378643 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 28.

Adding to 21110124116512 its reverse (21561142101112), we get a palindrome (42671266217624).

The spelling of 21110124116512 in words is "twenty-one trillion, one hundred ten billion, one hundred twenty-four million, one hundred sixteen thousand, five hundred twelve".