120200120212121 has 4 divisors (see below), whose sum is σ = 120387056636112. Its totient is φ = 120013183788132.

The previous prime is 120200120212091. The next prime is 120200120212129. The reversal of 120200120212121 is 121212021002021.

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 a cyclic number.

It is not a de Polignac number, because 120200120212121 - 2¹⁰ = 120200120211097 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120200120212121.

It is not an unprimeable number, because it can be changed into a prime (120200120212129) 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, 93468211031 + ... + 93468212316.

It is an arithmetic number, because the mean of its divisors is an integer number (30096764159028).

Almost surely, 2^{120200120212121} is an apocalyptic number.

It is an amenable number.

120200120212121 is a deficient number, since it is larger than the sum of its proper divisors (186936423991).

120200120212121 is an equidigital number, since it uses as much as digits as its factorization.

120200120212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186936423990.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120200120212121 its reverse (121212021002021), we get a palindrome (241412141214142).

The spelling of 120200120212121 in words is "one hundred twenty trillion, two hundred billion, one hundred twenty million, two hundred twelve thousand, one hundred twenty-one".