11000020021121 has 2 divisors, whose sum is σ = 11000020021122. Its totient is φ = 11000020021120.

The previous prime is 11000020021103. The next prime is 11000020021139. The reversal of 11000020021121 is 12112002000011.

It is a balanced prime because it is at equal distance from previous prime (11000020021103) and next prime (11000020021139).

It can be written as a sum of positive squares in only one way, i.e., 10714564902721 + 285455118400 = 3273311^2 + 534280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000020021121 - 2⁶ = 11000020021057 is a prime.

It is not a weakly prime, because it can be changed into another prime (11800020021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500010010560 + 5500010010561.

It is an arithmetic number, because the mean of its divisors is an integer number (5500010010561).

Almost surely, 2^{11000020021121} is an apocalyptic number.

It is an amenable number.

11000020021121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000020021121 is an equidigital number, since it uses as much as digits as its factorization.

11000020021121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11000020021121 its reverse (12112002000011), we get a palindrome (23112022021132).

The spelling of 11000020021121 in words is "eleven trillion, twenty million, twenty-one thousand, one hundred twenty-one".