11001001211 has 4 divisors (see below), whose sum is σ = 11107807152. Its totient is φ = 10894195272.

The previous prime is 11001001199. The next prime is 11001001213. The reversal of 11001001211 is 11210010011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11210010011 = 94951 ⋅118061.

It is a cyclic number.

It is not a de Polignac number, because 11001001211 - 2¹⁸ = 11000739067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001001213) 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, 53402816 + ... + 53403021.

It is an arithmetic number, because the mean of its divisors is an integer number (2776951788).

Almost surely, 2^11001001211 is an apocalyptic number.

11001001211 is a deficient number, since it is larger than the sum of its proper divisors (106805941).

11001001211 is a wasteful number, since it uses less digits than its factorization.

11001001211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106805940.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11001001211 its reverse (11210010011), we get a palindrome (22211011222).

The spelling of 11001001211 in words is "eleven billion, one million, one thousand, two hundred eleven".