121220222200212 has 192 divisors, whose sum is σ = 303897117081600. Its totient is φ = 37495156608000.

The previous prime is 121220222200163. The next prime is 121220222200213. The reversal of 121220222200212 is 212002222022121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220222200213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5328115837 + ... + 5328138587.

It is an arithmetic number, because the mean of its divisors is an integer number (1582797484800).

Almost surely, 2^{121220222200212} is an apocalyptic number.

121220222200212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121220222200212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151948558540800).

121220222200212 is an abundant number, since it is smaller than the sum of its proper divisors (182676894881388).

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

121220222200212 is a wasteful number, since it uses less digits than its factorization.

121220222200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25046 (or 25044 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121220222200212 its reverse (212002222022121), we get a palindrome (333222444222333).

The spelling of 121220222200212 in words is "one hundred twenty-one trillion, two hundred twenty billion, two hundred twenty-two million, two hundred thousand, two hundred twelve".