11000000111021 has 2 divisors, whose sum is σ = 11000000111022. Its totient is φ = 11000000111020.

The previous prime is 11000000111017. The next prime is 11000000111027. The reversal of 11000000111021 is 12011100000011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10834228988521 + 165771122500 = 3291539^2 + 407150^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000000111021 - 2² = 11000000111017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000000111027) 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 as a sum of consecutive naturals, namely, 5500000055510 + 5500000055511.

It is an arithmetic number, because the mean of its divisors is an integer number (5500000055511).

Almost surely, 2^{11000000111021} is an apocalyptic number.

It is an amenable number.

11000000111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000000111021 is an equidigital number, since it uses as much as digits as its factorization.

11000000111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 11000000111021 its reverse (12011100000011), we get a palindrome (23011100111032).

The spelling of 11000000111021 in words is "eleven trillion, one hundred eleven thousand, twenty-one".