11101221102123 has 6 divisors (see below), whose sum is σ = 16035097147524. Its totient is φ = 7400814068076.

The previous prime is 11101221102107. The next prime is 11101221102241. The reversal of 11101221102123 is 32120112210111.

It is a happy number.

It is not a de Polignac number, because 11101221102123 - 2⁴ = 11101221102107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101221102096 and 11101221102105.

It is not an unprimeable number, because it can be changed into a prime (11101221102623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616734505665 + ... + 616734505682.

It is an arithmetic number, because the mean of its divisors is an integer number (2672516191254).

Almost surely, 2^{11101221102123} is an apocalyptic number.

11101221102123 is a deficient number, since it is larger than the sum of its proper divisors (4933876045401).

11101221102123 is a wasteful number, since it uses less digits than its factorization.

11101221102123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233469011353 (or 1233469011350 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11101221102123 its reverse (32120112210111), we get a palindrome (43221333312234).

The spelling of 11101221102123 in words is "eleven trillion, one hundred one billion, two hundred twenty-one million, one hundred two thousand, one hundred twenty-three".