11001210021211 has 4 divisors (see below), whose sum is σ = 11025711603000. Its totient is φ = 10976708439424.

The previous prime is 11001210021173. The next prime is 11001210021223. The reversal of 11001210021211 is 11212001210011.

It is a happy number.

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 11001210021211 - 2¹³ = 11001210013019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001210021191 and 11001210021200.

It is not an unprimeable number, because it can be changed into a prime (11001210061211) 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, 12250790221 + ... + 12250791118.

It is an arithmetic number, because the mean of its divisors is an integer number (2756427900750).

Almost surely, 2^{11001210021211} is an apocalyptic number.

11001210021211 is a deficient number, since it is larger than the sum of its proper divisors (24501581789).

11001210021211 is an equidigital number, since it uses as much as digits as its factorization.

11001210021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24501581788.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11001210021211 its reverse (11212001210011), we get a palindrome (22213211231222).

The spelling of 11001210021211 in words is "eleven trillion, one billion, two hundred ten million, twenty-one thousand, two hundred eleven".