121222101112 has 64 divisors (see below), whose sum is σ = 262364889600. Its totient is φ = 51432485760.

The previous prime is 121222101107. The next prime is 121222101167. The reversal of 121222101112 is 211101222121.

121222101112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 7872573 + ... + 7887955.

It is an arithmetic number, because the mean of its divisors is an integer number (4099451400).

Almost surely, 2^121222101112 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 121222101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131182444800).

121222101112 is an abundant number, since it is smaller than the sum of its proper divisors (141142788488).

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

121222101112 is a wasteful number, since it uses less digits than its factorization.

121222101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16796 (or 16792 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121222101112 its reverse (211101222121), we get a palindrome (332323323233).

The spelling of 121222101112 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred twelve".