11220022022021 has 8 divisors (see below), whose sum is σ = 12201105029400. Its totient is φ = 10274614760448.

The previous prime is 11220022022003. The next prime is 11220022022047. The reversal of 11220022022021 is 12022022002211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8933439520996 + 2286582501025 = 2988886^2 + 1512145^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11220022022021 - 2¹⁴ = 11220022005637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220022022221) 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 7 ways as a sum of consecutive naturals, for example, 8918935796 + ... + 8918937053.

It is an arithmetic number, because the mean of its divisors is an integer number (1525138128675).

Almost surely, 2^{11220022022021} is an apocalyptic number.

It is an amenable number.

11220022022021 is a deficient number, since it is larger than the sum of its proper divisors (981083007379).

11220022022021 is a wasteful number, since it uses less digits than its factorization.

11220022022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17837872903.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 11220022022021 its reverse (12022022002211), we get a palindrome (23242044024232).

The spelling of 11220022022021 in words is "eleven trillion, two hundred twenty billion, twenty-two million, twenty-two thousand, twenty-one".