13112001 has 24 divisors (see below), whose sum is σ = 22588800. Its totient is φ = 7166016.

The previous prime is 13111961. The next prime is 13112051. The reversal of 13112001 is 10021131.

It is not a de Polignac number, because 13112001 - 2⁹ = 13111489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (13112051) 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, 3076 + ... + 5973.

It is an arithmetic number, because the mean of its divisors is an integer number (941200).

Almost surely, 2^13112001 is an apocalyptic number.

It is an amenable number.

13112001 is a deficient number, since it is larger than the sum of its proper divisors (9476799).

13112001 is a wasteful number, since it uses less digits than its factorization.

13112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085 (or 9082 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 13112001 is about 3621.0497096836. The cubic root of 13112001 is about 235.8067998911.

Adding to 13112001 its reverse (10021131), we get a palindrome (23133132).

The spelling of 13112001 in words is "thirteen million, one hundred twelve thousand, one".