11123211230213 has 8 divisors (see below), whose sum is σ = 11135248920600. Its totient is φ = 11111179419648.

The previous prime is 11123211230149. The next prime is 11123211230227. The reversal of 11123211230213 is 31203211232111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 186816721729 + 10936394508484 = 432223^2 + 3307022^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11123211230213 - 2⁶ = 11123211230149 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 (11123211230233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2320895 + ... + 5256707.

It is an arithmetic number, because the mean of its divisors is an integer number (1391906115075).

Almost surely, 2^{11123211230213} is an apocalyptic number.

It is an amenable number.

11123211230213 is a deficient number, since it is larger than the sum of its proper divisors (12037690387).

11123211230213 is a wasteful number, since it uses less digits than its factorization.

11123211230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939911.

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

Adding to 11123211230213 its reverse (31203211232111), we get a palindrome (42326422462324).

The spelling of 11123211230213 in words is "eleven trillion, one hundred twenty-three billion, two hundred eleven million, two hundred thirty thousand, two hundred thirteen".