121230121112 has 16 divisors (see below), whose sum is σ = 227312727840. Its totient is φ = 60613393696.

The previous prime is 121230121097. The next prime is 121230121121. The reversal of 121230121112 is 211121032121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133793 + ... + 510255.

It is an arithmetic number, because the mean of its divisors is an integer number (14207045490).

Almost surely, 2^121230121112 is an apocalyptic number.

It is an amenable number.

121230121112 is a deficient number, since it is larger than the sum of its proper divisors (106082606728).

121230121112 is a wasteful number, since it uses less digits than its factorization.

121230121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416722 (or 416718 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121230121112 its reverse (211121032121), we get a palindrome (332351153233).

The spelling of 121230121112 in words is "one hundred twenty-one billion, two hundred thirty million, one hundred twenty-one thousand, one hundred twelve".