13021113 has 24 divisors (see below), whose sum is σ = 20332128. Its totient is φ = 7390656.

The previous prime is 13021079. The next prime is 13021117. The reversal of 13021113 is 31112031.

It is not a de Polignac number, because 13021113 - 2⁶ = 13021049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13021117) 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, 41445 + ... + 41757.

It is an arithmetic number, because the mean of its divisors is an integer number (847172).

Almost surely, 2^13021113 is an apocalyptic number.

It is an amenable number.

13021113 is a deficient number, since it is larger than the sum of its proper divisors (7311015).

13021113 is a wasteful number, since it uses less digits than its factorization.

13021113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 13021113 is about 3608.4779339771. The cubic root of 13021113 is about 235.2606915372.

Adding to 13021113 its reverse (31112031), we get a palindrome (44133144).

It can be divided in two parts, 1302 and 1113, that added together give a triangular number (2415 = T₆₉).

The spelling of 13021113 in words is "thirteen million, twenty-one thousand, one hundred thirteen".