11112220202123 has 4 divisors (see below), whose sum is σ = 11122294745568. Its totient is φ = 11102145658680.

The previous prime is 11112220202081. The next prime is 11112220202179. The reversal of 11112220202123 is 32120202221111.

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 11112220202123 - 2¹⁰ = 11112220201099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112220202095 and 11112220202104.

It is not an unprimeable number, because it can be changed into a prime (11112220202023) 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 3 ways as a sum of consecutive naturals, for example, 5037270068 + ... + 5037272273.

It is an arithmetic number, because the mean of its divisors is an integer number (2780573686392).

Almost surely, 2^{11112220202123} is an apocalyptic number.

11112220202123 is a deficient number, since it is larger than the sum of its proper divisors (10074543445).

11112220202123 is a wasteful number, since it uses less digits than its factorization.

11112220202123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10074543444.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 11112220202123 its reverse (32120202221111), we get a palindrome (43232422423234).

The spelling of 11112220202123 in words is "eleven trillion, one hundred twelve billion, two hundred twenty million, two hundred two thousand, one hundred twenty-three".