111100212022212 has 36 divisors (see below), whose sum is σ = 320956168064896. Its totient is φ = 31742917720560.

The previous prime is 111100212022199. The next prime is 111100212022213. The reversal of 111100212022212 is 212220212001111.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×111100212022212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (111100212022213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220436928364 + ... + 220436928867.

Almost surely, 2^{111100212022212} is an apocalyptic number.

111100212022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111100212022212 is an abundant number, since it is smaller than the sum of its proper divisors (209855956042684).

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

111100212022212 is a wasteful number, since it uses less digits than its factorization.

111100212022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440873857248 (or 440873857243 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111100212022212 its reverse (212220212001111), we get a palindrome (323320424023323).

The spelling of 111100212022212 in words is "one hundred eleven trillion, one hundred billion, two hundred twelve million, twenty-two thousand, two hundred twelve".