13012021201 has 4 divisors (see below), whose sum is σ = 13012601652. Its totient is φ = 13011440752.

The previous prime is 13012021177. The next prime is 13012021249. The reversal of 13012021201 is 10212021031.

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 11193851601 + 1818169600 = 105801^2 + 42640^2 .

It is a cyclic number.

It is not a de Polignac number, because 13012021201 - 2⁷ = 13012021073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13012021261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255190 + ... + 301903.

It is an arithmetic number, because the mean of its divisors is an integer number (3253150413).

Almost surely, 2^13012021201 is an apocalyptic number.

It is an amenable number.

13012021201 is a deficient number, since it is larger than the sum of its proper divisors (580451).

13012021201 is an equidigital number, since it uses as much as digits as its factorization.

13012021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580450.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 13012021201 its reverse (10212021031), we get a palindrome (23224042232).

It can be divided in two parts, 130120 and 21201, that added together give a square (151321 = 389²).

The spelling of 13012021201 in words is "thirteen billion, twelve million, twenty-one thousand, two hundred one".