13021007 has 4 divisors (see below), whose sum is σ = 13120536. Its totient is φ = 12921480.

The previous prime is 13020991. The next prime is 13021009. The reversal of 13021007 is 70012031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70012031 = 2063 ⋅33937.

It is a cyclic number.

It is not a de Polignac number, because 13021007 - 2⁴ = 13020991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13020982 and 13021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13021009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49568 + ... + 49829.

It is an arithmetic number, because the mean of its divisors is an integer number (3280134).

Almost surely, 2^13021007 is an apocalyptic number.

13021007 is a deficient number, since it is larger than the sum of its proper divisors (99529).

13021007 is an equidigital number, since it uses as much as digits as its factorization.

13021007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99528.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 13021007 is about 3608.4632463141. The cubic root of 13021007 is about 235.2600531458.

Adding to 13021007 its reverse (70012031), we get a palindrome (83033038).

The spelling of 13021007 in words is "thirteen million, twenty-one thousand, seven".