11123001211 has 8 divisors (see below), whose sum is σ = 12719895264. Its totient is φ = 9528080640.

The previous prime is 11123001199. The next prime is 11123001259. The reversal of 11123001211 is 11210032111.

It is a happy number.

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 11123001211 - 2⁹ = 11123000699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123001191 and 11123001200.

It is not an unprimeable number, because it can be changed into a prime (11123031211) 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, 481270 + ... + 503851.

It is an arithmetic number, because the mean of its divisors is an integer number (1589986908).

Almost surely, 2^11123001211 is an apocalyptic number.

11123001211 is a deficient number, since it is larger than the sum of its proper divisors (1596894053).

11123001211 is an equidigital number, since it uses as much as digits as its factorization.

11123001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986741.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11123001211 its reverse (11210032111), we get a palindrome (22333033322).

The spelling of 11123001211 in words is "eleven billion, one hundred twenty-three million, one thousand, two hundred eleven".