11221230231311 has 4 divisors (see below), whose sum is σ = 11326101541992. Its totient is φ = 11116358920632.

The previous prime is 11221230231221. The next prime is 11221230231317. The reversal of 11221230231311 is 11313203212211.

It is a happy number.

11221230231311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11221230231311 - 2²⁶ = 11221163122447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221230231317) 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, 52435655180 + ... + 52435655393.

It is an arithmetic number, because the mean of its divisors is an integer number (2831525385498).

Almost surely, 2^{11221230231311} is an apocalyptic number.

11221230231311 is a deficient number, since it is larger than the sum of its proper divisors (104871310681).

11221230231311 is a wasteful number, since it uses less digits than its factorization.

11221230231311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104871310680.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11221230231311 its reverse (11313203212211), we get a palindrome (22534433443522).

The spelling of 11221230231311 in words is "eleven trillion, two hundred twenty-one billion, two hundred thirty million, two hundred thirty-one thousand, three hundred eleven".