20121200120201 has 4 divisors (see below), whose sum is σ = 20233609059600. Its totient is φ = 20008791180804.

The previous prime is 20121200120143. The next prime is 20121200120227. The reversal of 20121200120201 is 10202100212102.

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 20121200120201 - 2⁶ = 20121200120137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121200120261) 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, 56204469431 + ... + 56204469788.

It is an arithmetic number, because the mean of its divisors is an integer number (5058402264900).

Almost surely, 2^{20121200120201} is an apocalyptic number.

It is an amenable number.

20121200120201 is a deficient number, since it is larger than the sum of its proper divisors (112408939399).

20121200120201 is a wasteful number, since it uses less digits than its factorization.

20121200120201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112408939398.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20121200120201 its reverse (10202100212102), we get a palindrome (30323300332303).

The spelling of 20121200120201 in words is "twenty trillion, one hundred twenty-one billion, two hundred million, one hundred twenty thousand, two hundred one".