13120001 has 4 divisors (see below), whose sum is σ = 13250004. Its totient is φ = 12990000.

The previous prime is 13119983. The next prime is 13120057. The reversal of 13120001 is 10002131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11560000 + 1560001 = 3400^2 + 1249^2 .

It is a cyclic number.

It is not a de Polignac number, because 13120001 - 2¹⁸ = 12857857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13120061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64850 + ... + 65051.

It is an arithmetic number, because the mean of its divisors is an integer number (3312501).

Almost surely, 2^13120001 is an apocalyptic number.

It is an amenable number.

13120001 is a deficient number, since it is larger than the sum of its proper divisors (130003).

13120001 is a wasteful number, since it uses less digits than its factorization.

13120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130002.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 13120001 is about 3622.1541932944. The cubic root of 13120001 is about 235.8547475911.

Adding to 13120001 its reverse (10002131), we get a palindrome (23122132).

The spelling of 13120001 in words is "thirteen million, one hundred twenty thousand, one".