11011001222021 has 4 divisors (see below), whose sum is σ = 11011067492544. Its totient is φ = 11010934951500.

The previous prime is 11011001221999. The next prime is 11011001222059. The reversal of 11011001222021 is 12022210011011.

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 11011001222021 - 2³⁸ = 10736123315077 is a prime.

It is a super-2 number, since 2×11011001222021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011001221987 and 11011001222005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011001222521) 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 in 3 ways as a sum of consecutive naturals, for example, 32885405 + ... + 33218546.

It is an arithmetic number, because the mean of its divisors is an integer number (2752766873136).

Almost surely, 2^{11011001222021} is an apocalyptic number.

It is an amenable number.

11011001222021 is a deficient number, since it is larger than the sum of its proper divisors (66270523).

11011001222021 is an equidigital number, since it uses as much as digits as its factorization.

11011001222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66270522.

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

Adding to 11011001222021 its reverse (12022210011011), we get a palindrome (23033211233032).

The spelling of 11011001222021 in words is "eleven trillion, eleven billion, one million, two hundred twenty-two thousand, twenty-one".