11021321110021 has 4 divisors (see below), whose sum is σ = 11022729953472. Its totient is φ = 11019912266572.

The previous prime is 11021321110003. The next prime is 11021321110081. The reversal of 11021321110021 is 12001112312011.

It is a happy number.

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 11021321110021 - 2⁹ = 11021321109509 is a prime.

It is a super-3 number, since 3×11021321110021³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11021321109977 and 11021321110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021321110081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704409991 + ... + 704425636.

It is an arithmetic number, because the mean of its divisors is an integer number (2755682488368).

Almost surely, 2^{11021321110021} is an apocalyptic number.

It is an amenable number.

11021321110021 is a deficient number, since it is larger than the sum of its proper divisors (1408843451).

11021321110021 is an equidigital number, since it uses as much as digits as its factorization.

11021321110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408843450.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 11021321110021 its reverse (12001112312011), we get a palindrome (23022433422032).

The spelling of 11021321110021 in words is "eleven trillion, twenty-one billion, three hundred twenty-one million, one hundred ten thousand, twenty-one".