13220201311231 has 4 divisors (see below), whose sum is σ = 13221795843864. Its totient is φ = 13218606778600.

The previous prime is 13220201311181. The next prime is 13220201311241. The reversal of 13220201311231 is 13211310202231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13220201311231 - 2⁷ = 13220201311103 is a prime.

It is a super-2 number, since 2×13220201311231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220201311241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797253880 + ... + 797270461.

It is an arithmetic number, because the mean of its divisors is an integer number (3305448960966).

Almost surely, 2^{13220201311231} is an apocalyptic number.

13220201311231 is a deficient number, since it is larger than the sum of its proper divisors (1594532633).

13220201311231 is an equidigital number, since it uses as much as digits as its factorization.

13220201311231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594532632.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13220201311231 its reverse (13211310202231), we get a palindrome (26431511513462).

The spelling of 13220201311231 in words is "thirteen trillion, two hundred twenty billion, two hundred one million, three hundred eleven thousand, two hundred thirty-one".