13220201221001 has 16 divisors (see below), whose sum is σ = 14086453392000. Its totient is φ = 12364037707008.

The previous prime is 13220201220977. The next prime is 13220201221013. The reversal of 13220201221001 is 10012210202231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13220201221001 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220201221081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2100026 + ... + 5554323.

It is an arithmetic number, because the mean of its divisors is an integer number (880403337000).

Almost surely, 2^{13220201221001} is an apocalyptic number.

It is an amenable number.

13220201221001 is a deficient number, since it is larger than the sum of its proper divisors (866252170999).

13220201221001 is a wasteful number, since it uses less digits than its factorization.

13220201221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7655008.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 13220201221001 its reverse (10012210202231), we get a palindrome (23232411423232).

The spelling of 13220201221001 in words is "thirteen trillion, two hundred twenty billion, two hundred one million, two hundred twenty-one thousand, one".