1212201210201 has 4 divisors (see below), whose sum is σ = 1616268280272. Its totient is φ = 808134140132.

The previous prime is 1212201210179. The next prime is 1212201210277. The reversal of 1212201210201 is 1020121022121.

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 a de Polignac number, because none of the positive numbers 2^k-1212201210201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212201210601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202033535031 + ... + 202033535036.

It is an arithmetic number, because the mean of its divisors is an integer number (404067070068).

Almost surely, 2^{1212201210201} is an apocalyptic number.

It is an amenable number.

1212201210201 is a deficient number, since it is larger than the sum of its proper divisors (404067070071).

1212201210201 is an equidigital number, since it uses as much as digits as its factorization.

1212201210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404067070070.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212201210201 its reverse (1020121022121), we get a palindrome (2232322232322).

The spelling of 1212201210201 in words is "one trillion, two hundred twelve billion, two hundred one million, two hundred ten thousand, two hundred one".