11212100200123 has 4 divisors (see below), whose sum is σ = 11212587642168. Its totient is φ = 11211612758080.

The previous prime is 11212100200121. The next prime is 11212100200151. The reversal of 11212100200123 is 32100200121211.

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 11212100200123 - 2¹ = 11212100200121 is a prime.

It is a super-2 number, since 2×11212100200123² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11212100200097 and 11212100200106.

It is not an unprimeable number, because it can be changed into a prime (11212100200121) 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, 243686518 + ... + 243732523.

It is an arithmetic number, because the mean of its divisors is an integer number (2803146910542).

Almost surely, 2^{11212100200123} is an apocalyptic number.

11212100200123 is a deficient number, since it is larger than the sum of its proper divisors (487442045).

11212100200123 is an equidigital number, since it uses as much as digits as its factorization.

11212100200123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487442044.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11212100200123 its reverse (32100200121211), we get a palindrome (43312300321334).

The spelling of 11212100200123 in words is "eleven trillion, two hundred twelve billion, one hundred million, two hundred thousand, one hundred twenty-three".