11121123331013 has 4 divisors (see below), whose sum is σ = 11121131193708. Its totient is φ = 11121115468320.

The previous prime is 11121123331007. The next prime is 11121123331037. The reversal of 11121123331013 is 31013332112111.

11121123331013 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, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7511666710564 + 3609456620449 = 2740742^2 + 1899857^2 .

It is a cyclic number.

It is not a de Polignac number, because 11121123331013 - 2¹⁴ = 11121123314629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121123331013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121123331313) 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, 1157198 + ... + 4856063.

It is an arithmetic number, because the mean of its divisors is an integer number (2780282798427).

Almost surely, 2^{11121123331013} is an apocalyptic number.

It is an amenable number.

11121123331013 is a deficient number, since it is larger than the sum of its proper divisors (7862695).

11121123331013 is an equidigital number, since it uses as much as digits as its factorization.

11121123331013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7862694.

The product of its (nonzero) digits is 324, while the sum is 23.

Adding to 11121123331013 its reverse (31013332112111), we get a palindrome (42134455443124).

The spelling of 11121123331013 in words is "eleven trillion, one hundred twenty-one billion, one hundred twenty-three million, three hundred thirty-one thousand, thirteen".