121201221012222 has 192 divisors, whose sum is σ = 274237832736000. Its totient is φ = 35657876726784.

The previous prime is 121201221012191. The next prime is 121201221012229. The reversal of 121201221012222 is 222210122102121.

121201221012222 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 not an unprimeable number, because it can be changed into a prime (121201221012229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8365043554 + ... + 8365058042.

It is an arithmetic number, because the mean of its divisors is an integer number (1428322045500).

Almost surely, 2^{121201221012222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201221012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137118916368000).

121201221012222 is an abundant number, since it is smaller than the sum of its proper divisors (153036611723778).

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

121201221012222 is a wasteful number, since it uses less digits than its factorization.

121201221012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18395 (or 18382 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 121201221012222 its reverse (222210122102121), we get a palindrome (343411343114343).

The spelling of 121201221012222 in words is "one hundred twenty-one trillion, two hundred one billion, two hundred twenty-one million, twelve thousand, two hundred twenty-two".