11011122202021 has 2 divisors, whose sum is σ = 11011122202022. Its totient is φ = 11011122202020.

The previous prime is 11011122202009. The next prime is 11011122202037. The reversal of 11011122202021 is 12020222111011.

It is an a-pointer prime, because the next prime (11011122202037) can be obtained adding 11011122202021 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10205820569025 + 805301632996 = 3194655^2 + 897386^2 .

It is a cyclic number.

It is not a de Polignac number, because 11011122202021 - 2¹³ = 11011122193829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011122201986 and 11011122202004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11011122202081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505561101010 + 5505561101011.

It is an arithmetic number, because the mean of its divisors is an integer number (5505561101011).

Almost surely, 2^{11011122202021} is an apocalyptic number.

It is an amenable number.

11011122202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011122202021 is an equidigital number, since it uses as much as digits as its factorization.

11011122202021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11011122202021 its reverse (12020222111011), we get a palindrome (23031344313032).

The spelling of 11011122202021 in words is "eleven trillion, eleven billion, one hundred twenty-two million, two hundred two thousand, twenty-one".