121312212330222 has 72 divisors (see below), whose sum is σ = 277437754882080. Its totient is φ = 38304606352320.

The previous prime is 121312212330139. The next prime is 121312212330251. The reversal of 121312212330222 is 222033212213121.

121312212330222 is a `hidden beast` number, since 1 + 2 + 1 + 312 + 2 + 1 + 23 + 302 + 22 = 666.

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, 54273979 + ... + 56464937.

It is an arithmetic number, because the mean of its divisors is an integer number (3853302151140).

Almost surely, 2^{121312212330222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121312212330222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138718877441040).

121312212330222 is an abundant number, since it is smaller than the sum of its proper divisors (156125542551858).

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

121312212330222 is a wasteful number, since it uses less digits than its factorization.

121312212330222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199526 (or 2199504 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 121312212330222 its reverse (222033212213121), we get a palindrome (343345424543343).

The spelling of 121312212330222 in words is "one hundred twenty-one trillion, three hundred twelve billion, two hundred twelve million, three hundred thirty thousand, two hundred twenty-two".