11123400213 has 24 divisors (see below), whose sum is σ = 16507982400. Its totient is φ = 7214724864.

The previous prime is 11123400199. The next prime is 11123400221. The reversal of 11123400213 is 31200432111.

11123400213 is a `hidden beast` number, since 1 + 112 + 340 + 0 + 213 = 666.

It is not a de Polignac number, because 11123400213 - 2¹⁴ = 11123383829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123400263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56473 + ... + 159486.

It is an arithmetic number, because the mean of its divisors is an integer number (687832600).

Almost surely, 2^11123400213 is an apocalyptic number.

It is an amenable number.

11123400213 is a deficient number, since it is larger than the sum of its proper divisors (5384582187).

11123400213 is a wasteful number, since it uses less digits than its factorization.

11123400213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216121 (or 216118 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11123400213 its reverse (31200432111), we get a palindrome (42323832324).

The spelling of 11123400213 in words is "eleven billion, one hundred twenty-three million, four hundred thousand, two hundred thirteen".