121220330600 has 192 divisors, whose sum is σ = 311243472000. Its totient is φ = 43724620800.

The previous prime is 121220330599. The next prime is 121220330639. The reversal of 121220330600 is 6033022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7816454 + ... + 7831946.

It is an arithmetic number, because the mean of its divisors is an integer number (1621059750).

Almost surely, 2^121220330600 is an apocalyptic number.

121220330600 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 121220330600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155621736000).

121220330600 is an abundant number, since it is smaller than the sum of its proper divisors (190023141400).

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

121220330600 is a wasteful number, since it uses less digits than its factorization.

121220330600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15628 (or 15619 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121220330600 its reverse (6033022121), we get a palindrome (127253352721).

The spelling of 121220330600 in words is "one hundred twenty-one billion, two hundred twenty million, three hundred thirty thousand, six hundred".