200120012110001 has 4 divisors (see below), whose sum is σ = 200289461740404. Its totient is φ = 199950562479600.

The previous prime is 200120012109949. The next prime is 200120012110033. The reversal of 200120012110001 is 100011210021002.

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 194866523491600 + 5253488618401 = 13959460^2 + 2292049^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200120012110001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200120012910001) 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, 84724813430 + ... + 84724815791.

It is an arithmetic number, because the mean of its divisors is an integer number (50072365435101).

Almost surely, 2^{200120012110001} is an apocalyptic number.

It is an amenable number.

200120012110001 is a deficient number, since it is larger than the sum of its proper divisors (169449630403).

200120012110001 is a wasteful number, since it uses less digits than its factorization.

200120012110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169449630402.

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

Adding to 200120012110001 its reverse (100011210021002), we get a palindrome (300131222131003).

The spelling of 200120012110001 in words is "two hundred trillion, one hundred twenty billion, twelve million, one hundred ten thousand, one".