211121112122 has 4 divisors (see below), whose sum is σ = 316681668186. Its totient is φ = 105560556060.

The previous prime is 211121112119. The next prime is 211121112149. The reversal of 211121112122 is 221211121112.

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., 114344746201 + 96776365921 = 338149^2 + 311089^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 211121112122.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 52780278029 + ... + 52780278032.

Almost surely, 2^211121112122 is an apocalyptic number.

211121112122 is a deficient number, since it is larger than the sum of its proper divisors (105560556064).

211121112122 is a wasteful number, since it uses less digits than its factorization.

211121112122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105560556063.

The product of its digits is 32, while the sum is 17.

Adding to 211121112122 its reverse (221211121112), we get a palindrome (432332233234).

The spelling of 211121112122 in words is "two hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty-two".