201311220201311 has 8 divisors (see below), whose sum is σ = 219907815249024. Its totient is φ = 182763887658520.

The previous prime is 201311220201253. The next prime is 201311220201337. The reversal of 201311220201311 is 113102022113102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201311220201311 is a prime.

It is a super-2 number, since 2×201311220201311² (a number of 29 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 (201311220201341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12315617681 + ... + 12315634026.

It is an arithmetic number, because the mean of its divisors is an integer number (27488476906128).

Almost surely, 2^{201311220201311} is an apocalyptic number.

201311220201311 is a deficient number, since it is larger than the sum of its proper divisors (18596595047713).

201311220201311 is a wasteful number, since it uses less digits than its factorization.

201311220201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24631252461.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 201311220201311 its reverse (113102022113102), we get a palindrome (314413242314413).

The spelling of 201311220201311 in words is "two hundred one trillion, three hundred eleven billion, two hundred twenty million, two hundred one thousand, three hundred eleven".