211112111123 has 8 divisors (see below), whose sum is σ = 214606179216. Its totient is φ = 207646566400.

The previous prime is 211112111107. The next prime is 211112111129. The reversal of 211112111123 is 321111211112.

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 211112111123 - 2⁴ = 211112111107 is a prime.

It is a super-2 number, since 2×211112111123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211112111129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7115918 + ... + 7145523.

It is an arithmetic number, because the mean of its divisors is an integer number (26825772402).

Almost surely, 2^211112111123 is an apocalyptic number.

211112111123 is a deficient number, since it is larger than the sum of its proper divisors (3494068093).

211112111123 is a wasteful number, since it uses less digits than its factorization.

211112111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14261685.

The product of its digits is 24, while the sum is 17.

Adding to 211112111123 its reverse (321111211112), we get a palindrome (532223322235).

It can be divided in two parts, 21111211112 and 3, that multiplied together give a palindrome (63333633336).

The spelling of 211112111123 in words is "two hundred eleven billion, one hundred twelve million, one hundred eleven thousand, one hundred twenty-three".