11000000002021 has 2 divisors, whose sum is σ = 11000000002022. Its totient is φ = 11000000002020.

The previous prime is 11000000001961. The next prime is 11000000002063. The reversal of 11000000002021 is 12020000000011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10681327332900 + 318672669121 = 3268230^2 + 564511^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000000002021 - 2¹⁵ = 10999999969253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11000000001995 and 11000000002013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000000002721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500000001010 + 5500000001011.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000001011).

Almost surely, 2^{11000000002021} is an apocalyptic number.

It is an amenable number.

11000000002021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000000002021 is an equidigital number, since it uses as much as digits as its factorization.

11000000002021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 11000000002021 its reverse (12020000000011), we get a palindrome (23020000002032).

The spelling of 11000000002021 in words is "eleven trillion, two thousand, twenty-one".