11000021021021 has 4 divisors (see below), whose sum is σ = 11297318886492. Its totient is φ = 10702723155552.

The previous prime is 11000021020987. The next prime is 11000021021047. The reversal of 11000021021021 is 12012012000011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8362680748900 + 2637340272121 = 2891830^2 + 1623989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000021021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000021020993 and 11000021021011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000021026021) 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 3 ways as a sum of consecutive naturals, for example, 148648932680 + ... + 148648932753.

It is an arithmetic number, because the mean of its divisors is an integer number (2824329721623).

Almost surely, 2^{11000021021021} is an apocalyptic number.

It is an amenable number.

11000021021021 is a deficient number, since it is larger than the sum of its proper divisors (297297865471).

11000021021021 is an equidigital number, since it uses as much as digits as its factorization.

11000021021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297297865470.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11000021021021 its reverse (12012012000011), we get a palindrome (23012033021032).

The spelling of 11000021021021 in words is "eleven trillion, twenty-one million, twenty-one thousand, twenty-one".