111212100112111 has 8 divisors (see below), whose sum is σ = 112246578801504. Its totient is φ = 110180849126400.

The previous prime is 111212100112103. The next prime is 111212100112303. The reversal of 111212100112111 is 111211001212111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111212100112111 - 2³ = 111212100112103 is a prime.

It is a super-2 number, since 2×111212100112111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212100172111) 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, 806856690 + ... + 806994511.

It is an arithmetic number, because the mean of its divisors is an integer number (14030822350188).

Almost surely, 2^{111212100112111} is an apocalyptic number.

111212100112111 is a deficient number, since it is larger than the sum of its proper divisors (1034478689393).

111212100112111 is a wasteful number, since it uses less digits than its factorization.

111212100112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1613851841.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111212100112111 its reverse (111211001212111), we get a palindrome (222423101324222).

The spelling of 111212100112111 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred million, one hundred twelve thousand, one hundred eleven".