11011022021021 has 4 divisors (see below), whose sum is σ = 12012024022944. Its totient is φ = 10010020019100.

The previous prime is 11011022021017. The next prime is 11011022021071. The reversal of 11011022021021 is 12012022011011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11011022021021 - 2² = 11011022021017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011022020987 and 11011022021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011022021071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 500501000945 + ... + 500501000966.

It is an arithmetic number, because the mean of its divisors is an integer number (3003006005736).

Almost surely, 2^{11011022021021} is an apocalyptic number.

11011022021021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11011022021021 is a deficient number, since it is larger than the sum of its proper divisors (1001002001923).

11011022021021 is a wasteful number, since it uses less digits than its factorization.

11011022021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001002001922.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11011022021021 its reverse (12012022011011), we get a palindrome (23023044032032).

The spelling of 11011022021021 in words is "eleven trillion, eleven billion, twenty-two million, twenty-one thousand, twenty-one".