111112102201212 has 144 divisors (see below), whose sum is σ = 340031382425280. Its totient is φ = 29864900468736.

The previous prime is 111112102201193. The next prime is 111112102201237. The reversal of 111112102201212 is 212102201211111.

It is a happy number.

111112102201212 is a `hidden beast` number, since 1 + 1 + 111 + 210 + 220 + 121 + 2 = 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 47 ways as a sum of consecutive naturals, for example, 3086464 + ... + 15223352.

It is an arithmetic number, because the mean of its divisors is an integer number (2361329044620).

Almost surely, 2^{111112102201212} is an apocalyptic number.

111112102201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111112102201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170015691212640).

111112102201212 is an abundant number, since it is smaller than the sum of its proper divisors (228919280224068).

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

111112102201212 is a wasteful number, since it uses less digits than its factorization.

111112102201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12139060 (or 12139055 counting only the distinct ones).

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

Adding to 111112102201212 its reverse (212102201211111), we get a palindrome (323214303412323).

The spelling of 111112102201212 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred two million, two hundred one thousand, two hundred twelve".