121020203042200 has 384 divisors, whose sum is σ = 359819470080000. Its totient is φ = 36760455014400.

The previous prime is 121020203042197. The next prime is 121020203042269. The reversal of 121020203042200 is 2240302020121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 121116241 + ... + 122111359.

It is an arithmetic number, because the mean of its divisors is an integer number (937029870000).

Almost surely, 2^{121020203042200} is an apocalyptic number.

121020203042200 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 121020203042200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179909735040000).

121020203042200 is an abundant number, since it is smaller than the sum of its proper divisors (238799267037800).

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

121020203042200 is a wasteful number, since it uses less digits than its factorization.

121020203042200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995355 (or 995346 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 121020203042200 its reverse (2240302020121), we get a palindrome (123260505062321).

The spelling of 121020203042200 in words is "one hundred twenty-one trillion, twenty billion, two hundred three million, forty-two thousand, two hundred".