121011111211112 has 16 divisors (see below), whose sum is σ = 226906007187840. Its totient is φ = 60502842627696.

The previous prime is 121011111211097. The next prime is 121011111211121. The reversal of 121011111211112 is 211112111110121.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 338932658 + ... + 339289505.

It is an arithmetic number, because the mean of its divisors is an integer number (14181625449240).

Almost surely, 2^{121011111211112} is an apocalyptic number.

It is an amenable number.

121011111211112 is a deficient number, since it is larger than the sum of its proper divisors (105894895976728).

121011111211112 is a wasteful number, since it uses less digits than its factorization.

121011111211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678244472 (or 678244468 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 121011111211112 its reverse (211112111110121), we get a palindrome (332123222321233).

The spelling of 121011111211112 in words is "one hundred twenty-one trillion, eleven billion, one hundred eleven million, two hundred eleven thousand, one hundred twelve".