10716021 has 12 divisors (see below), whose sum is σ = 15527148. Its totient is φ = 7121664.

The previous prime is 10716011. The next prime is 10716023. The reversal of 10716021 is 12061701.

10716021 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 8328996 + 2387025 = 2886^2 + 1545^2 .

It is not a de Polignac number, because 10716021 - 2⁷ = 10715893 is a prime.

It is a super-2 number, since 2×10716021² = 229666212144882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10715985 and 10716003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10716023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1491 + ... + 4863.

It is an arithmetic number, because the mean of its divisors is an integer number (1293929).

Almost surely, 2^10716021 is an apocalyptic number.

It is an amenable number.

10716021 is a deficient number, since it is larger than the sum of its proper divisors (4811127).

10716021 is a wasteful number, since it uses less digits than its factorization.

10716021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3732 (or 3729 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 10716021 is about 3273.5334120794. The cubic root of 10716021 is about 220.4674701730.

Adding to 10716021 its reverse (12061701), we get a palindrome (22777722).

The spelling of 10716021 in words is "ten million, seven hundred sixteen thousand, twenty-one".