11111200123 has 8 divisors (see below), whose sum is σ = 11249170128. Its totient is φ = 10973327904.

The previous prime is 11111200117. The next prime is 11111200147. The reversal of 11111200123 is 32100211111.

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 11111200123 - 2²⁹ = 10574329211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111206123) 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, 219165 + ... + 265057.

It is an arithmetic number, because the mean of its divisors is an integer number (1406146266).

Almost surely, 2^11111200123 is an apocalyptic number.

11111200123 is a deficient number, since it is larger than the sum of its proper divisors (137970005).

11111200123 is an equidigital number, since it uses as much as digits as its factorization.

11111200123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48893.

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

Adding to 11111200123 its reverse (32100211111), we get a palindrome (43211411234).

The spelling of 11111200123 in words is "eleven billion, one hundred eleven million, two hundred thousand, one hundred twenty-three".