200120101112121 has 8 divisors (see below), whose sum is σ = 266826920512320. Its totient is φ = 133413341226672.

The previous prime is 200120101112117. The next prime is 200120101112143. The reversal of 200120101112121 is 121211101021002.

It is a happy number.

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

It is not a de Polignac number, because 200120101112121 - 2² = 200120101112117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 200120101112121.

It is not an unprimeable number, because it can be changed into a prime (200120101112161) 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, 6331326 + ... + 20983943.

It is an arithmetic number, because the mean of its divisors is an integer number (33353365064040).

Almost surely, 2^{200120101112121} is an apocalyptic number.

It is an amenable number.

200120101112121 is a deficient number, since it is larger than the sum of its proper divisors (66706819400199).

200120101112121 is a wasteful number, since it uses less digits than its factorization.

200120101112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29757375.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 200120101112121 its reverse (121211101021002), we get a palindrome (321331202133123).

The spelling of 200120101112121 in words is "two hundred trillion, one hundred twenty billion, one hundred one million, one hundred twelve thousand, one hundred twenty-one".