200120011010121 has 4 divisors (see below), whose sum is σ = 266826681346832. Its totient is φ = 133413340673412.

The previous prime is 200120011010107. The next prime is 200120011010201. The reversal of 200120011010121 is 121010110021002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 200120011010121 - 2¹³ = 200120011001929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200120011010097 and 200120011010106.

It is not an unprimeable number, because it can be changed into a prime (200120011015121) 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 3 ways as a sum of consecutive naturals, for example, 33353335168351 + ... + 33353335168356.

It is an arithmetic number, because the mean of its divisors is an integer number (66706670336708).

Almost surely, 2^{200120011010121} is an apocalyptic number.

It is an amenable number.

200120011010121 is a deficient number, since it is larger than the sum of its proper divisors (66706670336711).

200120011010121 is an equidigital number, since it uses as much as digits as its factorization.

200120011010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66706670336710.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 200120011010121 its reverse (121010110021002), we get a palindrome (321130121031123).

The spelling of 200120011010121 in words is "two hundred trillion, one hundred twenty billion, eleven million, ten thousand, one hundred twenty-one".