111201210211212 has 120 divisors (see below), whose sum is σ = 317148104184912. Its totient is φ = 33695346556800.

The previous prime is 111201210211207. The next prime is 111201210211297. The reversal of 111201210211212 is 212112012102111.

It is a happy number.

111201210211212 is a `hidden beast` number, since 1 + 1 + 120 + 121 + 0 + 211 + 212 = 666.

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

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 60006762 + ... + 61832142.

Almost surely, 2^{111201210211212} is an apocalyptic number.

111201210211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111201210211212 is an abundant number, since it is smaller than the sum of its proper divisors (205946893973700).

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

111201210211212 is a wasteful number, since it uses less digits than its factorization.

111201210211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842501 (or 1842490 counting only the distinct ones).

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

Adding to 111201210211212 its reverse (212112012102111), we get a palindrome (323313222313323).

The spelling of 111201210211212 in words is "one hundred eleven trillion, two hundred one billion, two hundred ten million, two hundred eleven thousand, two hundred twelve".