11212430123 has 4 divisors (see below), whose sum is σ = 11212737720. Its totient is φ = 11212122528.

The previous prime is 11212430113. The next prime is 11212430137. The reversal of 11212430123 is 32103421211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32103421211 = 1733 ⋅18524767.

It is a cyclic number.

It is not a de Polignac number, because 11212430123 - 2³⁰ = 10138688299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212430095 and 11212430104.

It is not an unprimeable number, because it can be changed into a prime (11212430113) 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, 90413 + ... + 174926.

It is an arithmetic number, because the mean of its divisors is an integer number (2803184430).

Almost surely, 2^11212430123 is an apocalyptic number.

11212430123 is a deficient number, since it is larger than the sum of its proper divisors (307597).

11212430123 is an equidigital number, since it uses as much as digits as its factorization.

11212430123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307596.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 11212430123 its reverse (32103421211), we get a palindrome (43315851334).

The spelling of 11212430123 in words is "eleven billion, two hundred twelve million, four hundred thirty thousand, one hundred twenty-three".