10721113 has 4 divisors (see below), whose sum is σ = 11545828. Its totient is φ = 9896400.

The previous prime is 10721107. The next prime is 10721141. The reversal of 10721113 is 31112701.

10721113 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31112701 = 5303 ⋅5867.

It can be written as a sum of positive squares in 2 ways, for example, as 1882384 + 8838729 = 1372^2 + 2973^2 .

It is a cyclic number.

It is not a de Polignac number, because 10721113 - 2⁹ = 10720601 is a prime.

It is a super-3 number, since 3×10721113³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10721143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412338 + ... + 412363.

It is an arithmetic number, because the mean of its divisors is an integer number (2886457).

Almost surely, 2^10721113 is an apocalyptic number.

10721113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

10721113 is a deficient number, since it is larger than the sum of its proper divisors (824715).

10721113 is an equidigital number, since it uses as much as digits as its factorization.

10721113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824714.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 10721113 is about 3274.3110725769. The cubic root of 10721113 is about 220.5023849544.

Adding to 10721113 its reverse (31112701), we get a palindrome (41833814).

The spelling of 10721113 in words is "ten million, seven hundred twenty-one thousand, one hundred thirteen".