121012220000 has 240 divisors, whose sum is σ = 351225971712. Its totient is φ = 40150080000.

The previous prime is 121012219997. The next prime is 121012220051. The reversal of 121012220000 is 22210121.

It is a happy number.

121012220000 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 an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 4326059 + ... + 4353941.

Almost surely, 2^121012220000 is an apocalyptic number.

121012220000 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 121012220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175612985856).

121012220000 is an abundant number, since it is smaller than the sum of its proper divisors (230213751712).

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

121012220000 is an equidigital number, since it uses as much as digits as its factorization.

121012220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27951 (or 27928 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 121012220000 its reverse (22210121), we get a palindrome (121034430121).

The spelling of 121012220000 in words is "one hundred twenty-one billion, twelve million, two hundred twenty thousand".