121223220300 has 576 divisors, whose sum is σ = 486468864000. Its totient is φ = 25212902400.

The previous prime is 121223220277. The next prime is 121223220317. The reversal of 121223220300 is 3022322121.

121223220300 is a `hidden beast` number, since 1 + 21 + 22 + 322 + 0 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17441226 + ... + 17448174.

It is an arithmetic number, because the mean of its divisors is an integer number (844564000).

Almost surely, 2^121223220300 is an apocalyptic number.

121223220300 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 121223220300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243234432000).

121223220300 is an abundant number, since it is smaller than the sum of its proper divisors (365245643700).

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

121223220300 is a wasteful number, since it uses less digits than its factorization.

121223220300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7063 (or 7050 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 121223220300 its reverse (3022322121), we get a palindrome (124245542421).

The spelling of 121223220300 in words is "one hundred twenty-one billion, two hundred twenty-three million, two hundred twenty thousand, three hundred".