13265021 has 16 divisors (see below), whose sum is σ = 17410560. Its totient is φ = 9791280.

The previous prime is 13265009. The next prime is 13265033. The reversal of 13265021 is 12056231.

It is an interprime number because it is at equal distance from previous prime (13265009) and next prime (13265033).

It is a cyclic number.

It is not a de Polignac number, because 13265021 - 2¹⁰ = 13263997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13264984 and 13265002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13265081) 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 15 ways as a sum of consecutive naturals, for example, 3071 + ... + 5996.

It is an arithmetic number, because the mean of its divisors is an integer number (1088160).

Almost surely, 2^13265021 is an apocalyptic number.

13265021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13265021 is a deficient number, since it is larger than the sum of its proper divisors (4145539).

13265021 is a wasteful number, since it uses less digits than its factorization.

13265021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9104.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 13265021 is about 3642.1176532342. The cubic root of 13265021 is about 236.7205605844.

The spelling of 13265021 in words is "thirteen million, two hundred sixty-five thousand, twenty-one".