11000001010221 has 16 divisors (see below), whose sum is σ = 16327576696320. Its totient is φ = 7319258500320.

The previous prime is 11000001010177. The next prime is 11000001010231. The reversal of 11000001010221 is 12201010000011.

It is a happy number.

It is not a de Polignac number, because 11000001010221 - 2⁶ = 11000001010157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000001010231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390971965 + ... + 391000098.

It is an arithmetic number, because the mean of its divisors is an integer number (1020473543520).

Almost surely, 2^{11000001010221} is an apocalyptic number.

It is an amenable number.

11000001010221 is a deficient number, since it is larger than the sum of its proper divisors (5327575686099).

11000001010221 is an equidigital number, since it uses as much as digits as its factorization.

11000001010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781972593 (or 781972587 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11000001010221 its reverse (12201010000011), we get a palindrome (23201011010232).

The spelling of 11000001010221 in words is "eleven trillion, one million, ten thousand, two hundred twenty-one".