211112122 has 8 divisors (see below), whose sum is σ = 341027316. Its totient is φ = 97436352.

The previous prime is 211112117. The next prime is 211112129. The reversal of 211112122 is 221211112.

It can be written as a sum of positive squares in 2 ways, for example, as 202521361 + 8590761 = 14231^2 + 2931^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (211112129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4059823 + ... + 4059874.

Almost surely, 2^211112122 is an apocalyptic number.

211112122 is a deficient number, since it is larger than the sum of its proper divisors (129915194).

211112122 is a wasteful number, since it uses less digits than its factorization.

211112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8119712.

The product of its digits is 16, while the sum is 13.

The square root of 211112122 is about 14529.6979321664. The cubic root of 211112122 is about 595.4396129715.

Adding to 211112122 its reverse (221211112), we get a palindrome (432323234).

The spelling of 211112122 in words is "two hundred eleven million, one hundred twelve thousand, one hundred twenty-two".