13220113222001 has 4 divisors (see below), whose sum is σ = 15108700825152. Its totient is φ = 11331525618852.

The previous prime is 13220113221977. The next prime is 13220113222073. The reversal of 13220113222001 is 10022231102231.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220113222001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220113222301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944293801565 + ... + 944293801578.

It is an arithmetic number, because the mean of its divisors is an integer number (3777175206288).

Almost surely, 2^{13220113222001} is an apocalyptic number.

It is an amenable number.

13220113222001 is a deficient number, since it is larger than the sum of its proper divisors (1888587603151).

13220113222001 is an equidigital number, since it uses as much as digits as its factorization.

13220113222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888587603150.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13220113222001 its reverse (10022231102231), we get a palindrome (23242344324232).

The spelling of 13220113222001 in words is "thirteen trillion, two hundred twenty billion, one hundred thirteen million, two hundred twenty-two thousand, one".