11121112210123 has 4 divisors (see below), whose sum is σ = 11124323623408. Its totient is φ = 11117900796840.

The previous prime is 11121112210121. The next prime is 11121112210127. The reversal of 11121112210123 is 32101221112111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11121112210123 - 2¹ = 11121112210121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11121112210123.

It is not an unprimeable number, because it can be changed into a prime (11121112210121) 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, 1605701448 + ... + 1605708373.

It is an arithmetic number, because the mean of its divisors is an integer number (2781080905852).

Almost surely, 2^{11121112210123} is an apocalyptic number.

11121112210123 is a deficient number, since it is larger than the sum of its proper divisors (3211413285).

11121112210123 is an equidigital number, since it uses as much as digits as its factorization.

11121112210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211413284.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 11121112210123 its reverse (32101221112111), we get a palindrome (43222333322234).

The spelling of 11121112210123 in words is "eleven trillion, one hundred twenty-one billion, one hundred twelve million, two hundred ten thousand, one hundred twenty-three".