11221321033021 has 16 divisors (see below), whose sum is σ = 12261146416128. Its totient is φ = 10184793044400.

The previous prime is 11221321033007. The next prime is 11221321033037. The reversal of 11221321033021 is 12033012312211.

It is a cyclic number.

It is not a de Polignac number, because 11221321033021 - 2⁷ = 11221321032893 is a prime.

It is a super-2 number, since 2×11221321033021² (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 = 11221321032983 and 11221321033001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221321033061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16764846 + ... + 17421328.

It is an arithmetic number, because the mean of its divisors is an integer number (766321651008).

Almost surely, 2^{11221321033021} is an apocalyptic number.

11221321033021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221321033021 is a deficient number, since it is larger than the sum of its proper divisors (1039825383107).

11221321033021 is a wasteful number, since it uses less digits than its factorization.

11221321033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658992.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 11221321033021 its reverse (12033012312211), we get a palindrome (23254333345232).

The spelling of 11221321033021 in words is "eleven trillion, two hundred twenty-one billion, three hundred twenty-one million, thirty-three thousand, twenty-one".