111212112210222 has 16 divisors (see below), whose sum is σ = 222424442440272. Its totient is φ = 37070667733440.

The previous prime is 111212112210191. The next prime is 111212112210373. The reversal of 111212112210222 is 222012211212111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031679 + ... + 15051642.

It is an arithmetic number, because the mean of its divisors is an integer number (13901527652517).

Almost surely, 2^{111212112210222} is an apocalyptic number.

111212112210222 is an abundant number, since it is smaller than the sum of its proper divisors (111212330230050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111212112210222 is a wasteful number, since it uses less digits than its factorization.

111212112210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18168323.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 111212112210222 its reverse (222012211212111), we get a palindrome (333224323422333).

The spelling of 111212112210222 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twelve million, two hundred ten thousand, two hundred twenty-two".