111212101222 has 16 divisors (see below), whose sum is σ = 169159823280. Its totient is φ = 54828127072.

The previous prime is 111212101159. The next prime is 111212101229. The reversal of 111212101222 is 222101212111.

It is a junction number, because it is equal to n+sod(n) for n = 111212101196 and 111212101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212101229) 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, 573613 + ... + 742600.

It is an arithmetic number, because the mean of its divisors is an integer number (10572488955).

Almost surely, 2^111212101222 is an apocalyptic number.

111212101222 is a deficient number, since it is larger than the sum of its proper divisors (57947722058).

111212101222 is a wasteful number, since it uses less digits than its factorization.

111212101222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316807.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111212101222 its reverse (222101212111), we get a palindrome (333313313333).

The spelling of 111212101222 in words is "one hundred eleven billion, two hundred twelve million, one hundred one thousand, two hundred twenty-two".