211112211200122 has 4 divisors (see below), whose sum is σ = 316668316800186. Its totient is φ = 105556105600060.

The previous prime is 211112211200119. The next prime is 211112211200129. The reversal of 211112211200122 is 221002112211112.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 185330077732801 + 25782133467321 = 13613599^2 + 5077611^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211112211200122.

It is not an unprimeable number, because it can be changed into a prime (211112211200129) 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 as a sum of consecutive naturals, namely, 52778052800029 + ... + 52778052800032.

Almost surely, 2^{211112211200122} is an apocalyptic number.

211112211200122 is a deficient number, since it is larger than the sum of its proper divisors (105556105600064).

211112211200122 is a wasteful number, since it uses less digits than its factorization.

211112211200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105556105600063.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211112211200122 its reverse (221002112211112), we get a palindrome (432114323411234).

The spelling of 211112211200122 in words is "two hundred eleven trillion, one hundred twelve billion, two hundred eleven million, two hundred thousand, one hundred twenty-two".