12200212123 has 4 divisors (see below), whose sum is σ = 13309322328. Its totient is φ = 11091101920.

The previous prime is 12200212121. The next prime is 12200212133. The reversal of 12200212123 is 32121200221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32121200221 = 11 ⋅2920109111.

It is a cyclic number.

It is not a de Polignac number, because 12200212123 - 2¹ = 12200212121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200212097 and 12200212106.

It is not an unprimeable number, because it can be changed into a prime (12200212121) 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, 554555086 + ... + 554555107.

It is an arithmetic number, because the mean of its divisors is an integer number (3327330582).

Almost surely, 2^12200212123 is an apocalyptic number.

12200212123 is a deficient number, since it is larger than the sum of its proper divisors (1109110205).

12200212123 is a wasteful number, since it uses less digits than its factorization.

12200212123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109110204.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12200212123 its reverse (32121200221), we get a palindrome (44321412344).

The spelling of 12200212123 in words is "twelve billion, two hundred million, two hundred twelve thousand, one hundred twenty-three".