11001021021211 has 8 divisors (see below), whose sum is σ = 11847286054800. Its totient is φ = 10154760651552.

The previous prime is 11001021021173. The next prime is 11001021021223. The reversal of 11001021021211 is 11212012010011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11001021021211 - 2²⁵ = 11000987466779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001021021191 and 11001021021200.

It is not an unprimeable number, because it can be changed into a prime (11001021021911) 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 7 ways as a sum of consecutive naturals, for example, 4902936 + ... + 6785338.

It is an arithmetic number, because the mean of its divisors is an integer number (1480910756850).

Almost surely, 2^{11001021021211} is an apocalyptic number.

11001021021211 is a deficient number, since it is larger than the sum of its proper divisors (846265033589).

11001021021211 is a wasteful number, since it uses less digits than its factorization.

11001021021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331965.

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

Adding to 11001021021211 its reverse (11212012010011), we get a palindrome (22213033031222).

The spelling of 11001021021211 in words is "eleven trillion, one billion, twenty-one million, twenty-one thousand, two hundred eleven".