121201000112200 has 144 divisors (see below), whose sum is σ = 285291840934800. Its totient is φ = 47885633020800.

The previous prime is 121201000112113. The next prime is 121201000112207. The reversal of 121201000112200 is 2211000102121.

It is not an unprimeable number, because it can be changed into a prime (121201000112207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9604637491 + ... + 9604650109.

It is an arithmetic number, because the mean of its divisors is an integer number (1981193339825).

Almost surely, 2^{121201000112200} is an apocalyptic number.

121201000112200 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 121201000112200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142645920467400).

121201000112200 is an abundant number, since it is smaller than the sum of its proper divisors (164090840822600).

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

121201000112200 is a wasteful number, since it uses less digits than its factorization.

121201000112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19772 (or 19680 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121201000112200 its reverse (2211000102121), we get a palindrome (123412000214321).

The spelling of 121201000112200 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred twelve thousand, two hundred".