111212111012222 has 16 divisors (see below), whose sum is σ = 183785270767344. Its totient is φ = 50050455000000.

The previous prime is 111212111012159. The next prime is 111212111012237. The reversal of 111212111012222 is 222210111212111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111212111012194 and 111212111012203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25025225279 + ... + 25025229722.

It is an arithmetic number, because the mean of its divisors is an integer number (11486579422959).

Almost surely, 2^{111212111012222} is an apocalyptic number.

111212111012222 is a deficient number, since it is larger than the sum of its proper divisors (72573159755122).

111212111012222 is a wasteful number, since it uses less digits than its factorization.

111212111012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50050455115.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 111212111012222 its reverse (222210111212111), we get a palindrome (333422222224333).

The spelling of 111212111012222 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, two hundred twenty-two".