121200113203 has 8 divisors (see below), whose sum is σ = 130791220448. Its totient is φ = 111647294784.

The previous prime is 121200113107. The next prime is 121200113231. The reversal of 121200113203 is 302311002121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121200113203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121200113233) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9565626 + ... + 9578287.

It is an arithmetic number, because the mean of its divisors is an integer number (16348902556).

Almost surely, 2^121200113203 is an apocalyptic number.

121200113203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121200113203 is a deficient number, since it is larger than the sum of its proper divisors (9591107245).

121200113203 is a wasteful number, since it uses less digits than its factorization.

121200113203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19144413.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121200113203 its reverse (302311002121), we get a palindrome (423511115324).

The spelling of 121200113203 in words is "one hundred twenty-one billion, two hundred million, one hundred thirteen thousand, two hundred three".