121243102112 has 96 divisors (see below), whose sum is σ = 266964465600. Its totient is φ = 53722777600.

The previous prime is 121243102109. The next prime is 121243102121. The reversal of 121243102112 is 211201342121.

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 15 ways as a sum of consecutive naturals, for example, 23362814 + ... + 23368002.

It is an arithmetic number, because the mean of its divisors is an integer number (2780879850).

Almost surely, 2^121243102112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121243102112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133482232800).

121243102112 is an abundant number, since it is smaller than the sum of its proper divisors (145721363488).

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

121243102112 is a wasteful number, since it uses less digits than its factorization.

121243102112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6870 (or 6862 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121243102112 its reverse (211201342121), we get a palindrome (332444444233).

The spelling of 121243102112 in words is "one hundred twenty-one billion, two hundred forty-three million, one hundred two thousand, one hundred twelve".