212111000123 has 8 divisors (see below), whose sum is σ = 235315748160. Its totient is φ = 189559907080.

The previous prime is 212111000117. The next prime is 212111000159. The reversal of 212111000123 is 321000111212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212111000123 - 2¹⁶ = 212110934587 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212111000098 and 212111000107.

It is not an unprimeable number, because it can be changed into a prime (212111000113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163413065 + ... + 163414362.

It is an arithmetic number, because the mean of its divisors is an integer number (29414468520).

Almost surely, 2^212111000123 is an apocalyptic number.

212111000123 is a deficient number, since it is larger than the sum of its proper divisors (23204748037).

212111000123 is a wasteful number, since it uses less digits than its factorization.

212111000123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326827497.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212111000123 its reverse (321000111212), we get a palindrome (533111111335).

The spelling of 212111000123 in words is "two hundred twelve billion, one hundred eleven million, one hundred twenty-three", and thus it is an aban number.