121101201200 has 60 divisors (see below), whose sum is σ = 332509305840. Its totient is φ = 41520410880.

The previous prime is 121101201167. The next prime is 121101201209. The reversal of 121101201200 is 2102101121.

It is not an unprimeable number, because it can be changed into a prime (121101201209) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 21622415 + ... + 21628014.

It is an arithmetic number, because the mean of its divisors is an integer number (5541821764).

Almost surely, 2^121101201200 is an apocalyptic number.

121101201200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101201200 is an abundant number, since it is smaller than the sum of its proper divisors (211408104640).

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

121101201200 is a wasteful number, since it uses less digits than its factorization.

121101201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43250454 (or 43250443 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121101201200 its reverse (2102101121), we get a palindrome (123203302321).

The spelling of 121101201200 in words is "one hundred twenty-one billion, one hundred one million, two hundred one thousand, two hundred".