13211001 has 6 divisors (see below), whose sum is σ = 19082570. Its totient is φ = 8807328.

The previous prime is 13210937. The next prime is 13211059. The reversal of 13211001 is 10011231.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 251001 = 3600^2 + 501^2 .

It is not a de Polignac number, because 13211001 - 2⁶ = 13210937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1467889 = 13211001 / (1 + 3 + 2 + 1 + 1 + 0 + 0 + 1).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13211101) 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 5 ways as a sum of consecutive naturals, for example, 733936 + ... + 733953.

Almost surely, 2^13211001 is an apocalyptic number.

It is an amenable number.

13211001 is a deficient number, since it is larger than the sum of its proper divisors (5871569).

13211001 is a wasteful number, since it uses less digits than its factorization.

13211001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467895 (or 1467892 counting only the distinct ones).

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

The square root of 13211001 is about 3634.6940724083. The cubic root of 13211001 is about 236.3987859283.

Adding to 13211001 its reverse (10011231), we get a palindrome (23222232).

The spelling of 13211001 in words is "thirteen million, two hundred eleven thousand, one".