111222121000212 has 72 divisors (see below), whose sum is σ = 291298565089896. Its totient is φ = 35752817608704.

The previous prime is 111222121000201. The next prime is 111222121000213. The reversal of 111222121000212 is 212000121222111.

111222121000212 is a `hidden beast` number, since 11 + 12 + 221 + 210 + 0 + 0 + 212 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 35345504016 + 111186775496196 = 188004^2 + 10544514^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222121000213) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 369318913 + ... + 369619944.

Almost surely, 2^{111222121000212} is an apocalyptic number.

111222121000212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111222121000212 is an abundant number, since it is smaller than the sum of its proper divisors (180076444089684).

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

111222121000212 is a wasteful number, since it uses less digits than its factorization.

111222121000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738939017 (or 738939012 counting only the distinct ones).

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

Adding to 111222121000212 its reverse (212000121222111), we get a palindrome (323222242222323).

The spelling of 111222121000212 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twelve", and thus it is an aban number.