121212212000 has 192 divisors, whose sum is σ = 325347684480. Its totient is φ = 44015488000.

The previous prime is 121212211987. The next prime is 121212212003. The reversal of 121212212000 is 212212121.

It is not an unprimeable number, because it can be changed into a prime (121212212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41666546 + ... + 41669454.

It is an arithmetic number, because the mean of its divisors is an integer number (1694519190).

Almost surely, 2^121212212000 is an apocalyptic number.

121212212000 is a gapful number since it is divisible by the number (10) 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 121212212000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162673842240).

121212212000 is an abundant number, since it is smaller than the sum of its proper divisors (204135472480).

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

121212212000 is a wasteful number, since it uses less digits than its factorization.

121212212000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892 (or 3874 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121212212000 its reverse (212212121), we get a palindrome (121424424121).

The spelling of 121212212000 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred twelve thousand".