111212202111222 has 16 divisors (see below), whose sum is σ = 222424658919360. Its totient is φ = 37070691587592.

The previous prime is 111212202111221. The next prime is 111212202111223. The reversal of 111212202111222 is 222111202212111.

It is an interprime number because it is at equal distance from previous prime (111212202111221) and next prime (111212202111223).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212202111221) 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, 4680972 + ... + 15631247.

It is an arithmetic number, because the mean of its divisors is an integer number (13901541182460).

Almost surely, 2^{111212202111222} is an apocalyptic number.

111212202111222 is an abundant number, since it is smaller than the sum of its proper divisors (111212456808138).

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

111212202111222 is a wasteful number, since it uses less digits than its factorization.

111212202111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21224747.

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

Adding to 111212202111222 its reverse (222111202212111), we get a palindrome (333323404323333).

The spelling of 111212202111222 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred two million, one hundred eleven thousand, two hundred twenty-two".