211112220122 has 4 divisors (see below), whose sum is σ = 316668330186. Its totient is φ = 105556110060.

The previous prime is 211112220107. The next prime is 211112220227. The reversal of 211112220122 is 221022211112.

211112220122 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 can be written as a sum of positive squares in only one way, i.e., 178083156001 + 33029064121 = 421999^2 + 181739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 211112220122.

It is an unprimeable number.

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, 52778055029 + ... + 52778055032.

Almost surely, 2^211112220122 is an apocalyptic number.

211112220122 is a deficient number, since it is larger than the sum of its proper divisors (105556110064).

211112220122 is a wasteful number, since it uses less digits than its factorization.

211112220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105556110063.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211112220122 its reverse (221022211112), we get a palindrome (432134431234).

The spelling of 211112220122 in words is "two hundred eleven billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty-two".