13220111001 has 4 divisors (see below), whose sum is σ = 17626814672. Its totient is φ = 8813407332.

The previous prime is 13220110999. The next prime is 13220111017. The reversal of 13220111001 is 10011102231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13220111001 - 2¹ = 13220110999 is a prime.

It is a super-2 number, since 2×13220111001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220111041) 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, 2203351831 + ... + 2203351836.

It is an arithmetic number, because the mean of its divisors is an integer number (4406703668).

Almost surely, 2^13220111001 is an apocalyptic number.

It is an amenable number.

13220111001 is a deficient number, since it is larger than the sum of its proper divisors (4406703671).

13220111001 is an equidigital number, since it uses as much as digits as its factorization.

13220111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4406703670.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 13220111001 its reverse (10011102231), we get a palindrome (23231213232).

The spelling of 13220111001 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, one".