1212202001211 has 4 divisors (see below), whose sum is σ = 1616269334952. Its totient is φ = 808134667472.

The previous prime is 1212202001209. The next prime is 1212202001239. The reversal of 1212202001211 is 1121002022121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212202001211 - 2¹ = 1212202001209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1212202001911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202033666866 + ... + 202033666871.

It is an arithmetic number, because the mean of its divisors is an integer number (404067333738).

Almost surely, 2^{1212202001211} is an apocalyptic number.

1212202001211 is a deficient number, since it is larger than the sum of its proper divisors (404067333741).

1212202001211 is an equidigital number, since it uses as much as digits as its factorization.

1212202001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404067333740.

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

Adding to 1212202001211 its reverse (1121002022121), we get a palindrome (2333204023332).

The spelling of 1212202001211 in words is "one trillion, two hundred twelve billion, two hundred two million, one thousand, two hundred eleven".