16021116125 has 16 divisors (see below), whose sum is σ = 22850690304. Its totient is φ = 10985907600.

The previous prime is 16021116121. The next prime is 16021116161. The reversal of 16021116125 is 52161112061.

It is not a de Polignac number, because 16021116125 - 2² = 16021116121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16021116094 and 16021116103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16021116121) 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 15 ways as a sum of consecutive naturals, for example, 9154049 + ... + 9155798.

It is an arithmetic number, because the mean of its divisors is an integer number (1428168144).

Almost surely, 2^16021116125 is an apocalyptic number.

It is an amenable number.

16021116125 is a deficient number, since it is larger than the sum of its proper divisors (6829574179).

16021116125 is an equidigital number, since it uses as much as digits as its factorization.

16021116125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18309869 (or 18309859 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 16021116125 its reverse (52161112061), we get a palindrome (68182228186).

The spelling of 16021116125 in words is "sixteen billion, twenty-one million, one hundred sixteen thousand, one hundred twenty-five".