200120012011121 has 4 divisors (see below), whose sum is σ = 207020702080500. Its totient is φ = 193219321941744.

The previous prime is 200120012011103. The next prime is 200120012011133. The reversal of 200120012011121 is 121110210021002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156838928896225 + 43281083114896 = 12523535^2 + 6578836^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120012011121 - 2¹⁴ = 200120011994737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200120012011096 and 200120012011105.

It is not an unprimeable number, because it can be changed into a prime (200120012011721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3450345034646 + ... + 3450345034703.

It is an arithmetic number, because the mean of its divisors is an integer number (51755175520125).

Almost surely, 2^{200120012011121} is an apocalyptic number.

It is an amenable number.

200120012011121 is a deficient number, since it is larger than the sum of its proper divisors (6900690069379).

200120012011121 is an equidigital number, since it uses as much as digits as its factorization.

200120012011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6900690069378.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 200120012011121 its reverse (121110210021002), we get a palindrome (321230222032123).

The spelling of 200120012011121 in words is "two hundred trillion, one hundred twenty billion, twelve million, eleven thousand, one hundred twenty-one".