11123110621666 has 8 divisors (see below), whose sum is σ = 16687618465104. Its totient is φ = 5560571133300.

The previous prime is 11123110621639. The next prime is 11123110621673. The reversal of 11123110621666 is 66612601132111.

It is a happy number.

11123110621666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 492074640 + ... + 492097243.

It is an arithmetic number, because the mean of its divisors is an integer number (2085952308138).

Almost surely, 2^{11123110621666} is an apocalyptic number.

11123110621666 is a deficient number, since it is larger than the sum of its proper divisors (5564507843438).

11123110621666 is an equidigital number, since it uses as much as digits as its factorization.

11123110621666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984177536.

The product of its (nonzero) digits is 15552, while the sum is 37.

Adding to 11123110621666 its reverse (66612601132111), we get a palindrome (77735711753777).

The spelling of 11123110621666 in words is "eleven trillion, one hundred twenty-three billion, one hundred ten million, six hundred twenty-one thousand, six hundred sixty-six".