121112220110212 has 24 divisors (see below), whose sum is σ = 221188316130432. Its totient is φ = 57916198137600.

The previous prime is 121112220110201. The next prime is 121112220110221. The reversal of 121112220110212 is 212011022211121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121112220110212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79210989 + ... + 80725492.

It is an arithmetic number, because the mean of its divisors is an integer number (9216179838768).

Almost surely, 2^{121112220110212} is an apocalyptic number.

It is an amenable number.

121112220110212 is a deficient number, since it is larger than the sum of its proper divisors (100076096020220).

121112220110212 is a wasteful number, since it uses less digits than its factorization.

121112220110212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159944739 (or 159944737 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121112220110212 its reverse (212011022211121), we get a palindrome (333123242321333).

The spelling of 121112220110212 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred ten thousand, two hundred twelve".