111212201200212 has 54 divisors (see below), whose sum is σ = 327016829724858. Its totient is φ = 31774914628128.

The previous prime is 111212201200183. The next prime is 111212201200297. The reversal of 111212201200212 is 212002102212111.

111212201200212 is a `hidden beast` number, since 1 + 11 + 21 + 220 + 1 + 200 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 60306344992656 + 50905856207556 = 7765716^2 + 7134834^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31522731003 + ... + 31522734530.

It is an arithmetic number, because the mean of its divisors is an integer number (6055867217127).

Almost surely, 2^{111212201200212} is an apocalyptic number.

111212201200212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111212201200212 is an abundant number, since it is smaller than the sum of its proper divisors (215804628524646).

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

111212201200212 is a wasteful number, since it uses less digits than its factorization.

111212201200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63045465557 (or 63045465545 counting only the distinct ones).

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

Adding to 111212201200212 its reverse (212002102212111), we get a palindrome (323214303412323).

The spelling of 111212201200212 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred one million, two hundred thousand, two hundred twelve".