121201110012222 has 72 divisors (see below), whose sum is σ = 269934970136832. Its totient is φ = 39302149708800.

The previous prime is 121201110012173. The next prime is 121201110012289. The reversal of 121201110012222 is 222210011102121.

121201110012222 is a `hidden beast` number, since 121 + 201 + 110 + 0 + 12 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121201110012195 and 121201110012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154137822 + ... + 154922142.

It is an arithmetic number, because the mean of its divisors is an integer number (3749096807456).

Almost surely, 2^{121201110012222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121201110012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134967485068416).

121201110012222 is an abundant number, since it is smaller than the sum of its proper divisors (148733860124610).

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

121201110012222 is a wasteful number, since it uses less digits than its factorization.

121201110012222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790674 (or 790634 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121201110012222 its reverse (222210011102121), we get a palindrome (343411121114343).

The spelling of 121201110012222 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred ten million, twelve thousand, two hundred twenty-two".