13113001221 has 32 divisors (see below), whose sum is σ = 19501747200. Its totient is φ = 7788752640.

The previous prime is 13113001219. The next prime is 13113001241. The reversal of 13113001221 is 12210031131.

It is a happy number.

It is not a de Polignac number, because 13113001221 - 2¹ = 13113001219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13113001221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113001211) 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 31 ways as a sum of consecutive naturals, for example, 1479120 + ... + 1487958.

It is an arithmetic number, because the mean of its divisors is an integer number (609429600).

Almost surely, 2^13113001221 is an apocalyptic number.

It is an amenable number.

13113001221 is a deficient number, since it is larger than the sum of its proper divisors (6388745979).

13113001221 is a wasteful number, since it uses less digits than its factorization.

13113001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10409.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 13113001221 its reverse (12210031131), we get a palindrome (25323032352).

The spelling of 13113001221 in words is "thirteen billion, one hundred thirteen million, one thousand, two hundred twenty-one".