211112123 has 4 divisors (see below), whose sum is σ = 212034240. Its totient is φ = 210190008.

The previous prime is 211112117. The next prime is 211112129. The reversal of 211112123 is 321211112.

211112123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (211112117) and next prime (211112129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211112123 is a prime.

It is a super-3 number, since 3×211112123³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211112098 and 211112107.

It is not an unprimeable number, because it can be changed into a prime (211112129) 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, 460715 + ... + 461172.

It is an arithmetic number, because the mean of its divisors is an integer number (53008560).

Almost surely, 2^211112123 is an apocalyptic number.

211112123 is a deficient number, since it is larger than the sum of its proper divisors (922117).

211112123 is an equidigital number, since it uses as much as digits as its factorization.

211112123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922116.

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

The square root of 211112123 is about 14529.6979665787. The cubic root of 211112123 is about 595.4396139117.

Adding to 211112123 its reverse (321211112), we get a palindrome (532323235).

The spelling of 211112123 in words is "two hundred eleven million, one hundred twelve thousand, one hundred twenty-three".