16122681 has 24 divisors (see below), whose sum is σ = 24845184. Its totient is φ = 10039680.

The previous prime is 16122649. The next prime is 16122703. The reversal of 16122681 is 18622161.

16122681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

16122681 is a nontrivial binomial coefficient, being equal to C(5679, 2).

It is not a de Polignac number, because 16122681 - 2⁵ = 16122649 is a prime.

It is a super-2 number, since 2×16122681² = 519881685255522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16122181) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25236 + ... + 25866.

It is an arithmetic number, because the mean of its divisors is an integer number (1035216).

Almost surely, 2^16122681 is an apocalyptic number.

16122681 is the 5678-th triangular number.

It is an amenable number.

16122681 is a deficient number, since it is larger than the sum of its proper divisors (8722503).

16122681 is a wasteful number, since it uses less digits than its factorization.

16122681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 818 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 16122681 is about 4015.3058414024. The cubic root of 16122681 is about 252.6266057889.

The spelling of 16122681 in words is "sixteen million, one hundred twenty-two thousand, six hundred eighty-one".