201311111230201 has 4 divisors (see below), whose sum is σ = 230069841405952. Its totient is φ = 172552381054452.

The previous prime is 201311111230157. The next prime is 201311111230213. The reversal of 201311111230201 is 102032111113102.

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 201311111230201 - 2⁹ = 201311111229689 is a prime.

It is a super-2 number, since 2×201311111230201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201311111230301) 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, 14379365087865 + ... + 14379365087878.

It is an arithmetic number, because the mean of its divisors is an integer number (57517460351488).

Almost surely, 2^{201311111230201} is an apocalyptic number.

It is an amenable number.

201311111230201 is a deficient number, since it is larger than the sum of its proper divisors (28758730175751).

201311111230201 is an equidigital number, since it uses as much as digits as its factorization.

201311111230201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28758730175750.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 201311111230201 its reverse (102032111113102), we get a palindrome (303343222343303).

The spelling of 201311111230201 in words is "two hundred one trillion, three hundred eleven billion, one hundred eleven million, two hundred thirty thousand, two hundred one".