11001213001211 has 4 divisors (see below), whose sum is σ = 11001614079024. Its totient is φ = 11000811923400.

The previous prime is 11001213001201. The next prime is 11001213001249. The reversal of 11001213001211 is 11210031210011.

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 11001213001211 - 2³⁴ = 10984033132027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001213001201) 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, 200497760 + ... + 200552621.

It is an arithmetic number, because the mean of its divisors is an integer number (2750403519756).

Almost surely, 2^{11001213001211} is an apocalyptic number.

11001213001211 is a deficient number, since it is larger than the sum of its proper divisors (401077813).

11001213001211 is an equidigital number, since it uses as much as digits as its factorization.

11001213001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401077812.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 11001213001211 its reverse (11210031210011), we get a palindrome (22211244211222).

The spelling of 11001213001211 in words is "eleven trillion, one billion, two hundred thirteen million, one thousand, two hundred eleven".