11331211231011 has 32 divisors (see below), whose sum is σ = 17866447280640. Its totient is φ = 6250148948736.

The previous prime is 11331211230967. The next prime is 11331211231031. The reversal of 11331211231011 is 11013211213311.

11331211231011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11331211231011 - 2³¹ = 11329063747363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11331211231031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142255 + ... + 4762631.

It is an arithmetic number, because the mean of its divisors is an integer number (558326477520).

Almost surely, 2^{11331211231011} is an apocalyptic number.

11331211231011 is a deficient number, since it is larger than the sum of its proper divisors (6535236049629).

11331211231011 is a wasteful number, since it uses less digits than its factorization.

11331211231011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624443.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 11331211231011 its reverse (11013211213311), we get a palindrome (22344422444322).

The spelling of 11331211231011 in words is "eleven trillion, three hundred thirty-one billion, two hundred eleven million, two hundred thirty-one thousand, eleven".