111112201201212 has 48 divisors (see below), whose sum is σ = 288101666003200. Its totient is φ = 37033158029040.

The previous prime is 111112201201123. The next prime is 111112201201223. The reversal of 111112201201212 is 212102102211111.

It is a happy number.

111112201201212 is a `hidden beast` number, since 1 + 1 + 111 + 220 + 120 + 1 + 212 = 666.

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 15 ways as a sum of consecutive naturals, for example, 57974512 + ... + 59860407.

Almost surely, 2^{111112201201212} is an apocalyptic number.

111112201201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111112201201212 is an abundant number, since it is smaller than the sum of its proper divisors (176989464801988).

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

111112201201212 is a wasteful number, since it uses less digits than its factorization.

111112201201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117843663 (or 117843655 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111112201201212 its reverse (212102102211111), we get a palindrome (323214303412323).

The spelling of 111112201201212 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred one million, two hundred one thousand, two hundred twelve".