111212112022111 has 6 divisors (see below), whose sum is σ = 111490140734336. Its totient is φ = 110934774924000.

The previous prime is 111212112022031. The next prime is 111212112022169. The reversal of 111212112022111 is 111220211212111.

It is not a de Polignac number, because 111212112022111 - 2²⁹ = 111211575151199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212112026111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 345645855 + ... + 345967456.

Almost surely, 2^{111212112022111} is an apocalyptic number.

111212112022111 is a deficient number, since it is larger than the sum of its proper divisors (278028712225).

111212112022111 is an frugal number, since it uses more digits than its factorization.

111212112022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691614113 (or 691613712 counting only the distinct ones).

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

Adding to 111212112022111 its reverse (111220211212111), we get a palindrome (222432323234222).

The spelling of 111212112022111 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twelve million, twenty-two thousand, one hundred eleven".