111101201211212 has 12 divisors (see below), whose sum is σ = 194427178960560. Its totient is φ = 55550578651056.

The previous prime is 111101201211181. The next prime is 111101201211223. The reversal of 111101201211212 is 212112102101111.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12312089 + ... + 19333647.

It is an arithmetic number, because the mean of its divisors is an integer number (16202264913380).

Almost surely, 2^{111101201211212} is an apocalyptic number.

It is an amenable number.

111101201211212 is a deficient number, since it is larger than the sum of its proper divisors (83325977749348).

111101201211212 is a wasteful number, since it uses less digits than its factorization.

111101201211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10977280 (or 10977278 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 111101201211212 its reverse (212112102101111), we get a palindrome (323213303312323).

The spelling of 111101201211212 in words is "one hundred eleven trillion, one hundred one billion, two hundred one million, two hundred eleven thousand, two hundred twelve".