201111111121222 has 16 divisors (see below), whose sum is σ = 301796071603200. Its totient is φ = 100512421607752.

The previous prime is 201111111121147. The next prime is 201111111121223. The reversal of 201111111121222 is 222121111111102.

It is a self number, because there is not a number n which added to its sum of digits gives 201111111121222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201111111121223) 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, 497076903 + ... + 497481325.

It is an arithmetic number, because the mean of its divisors is an integer number (18862254475200).

Almost surely, 2^{201111111121222} is an apocalyptic number.

201111111121222 is a deficient number, since it is larger than the sum of its proper divisors (100684960481978).

201111111121222 is a wasteful number, since it uses less digits than its factorization.

201111111121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510467.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 201111111121222 its reverse (222121111111102), we get a palindrome (423232222232324).

The spelling of 201111111121222 in words is "two hundred one trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".