11220221022021 has 12 divisors (see below), whose sum is σ = 17680348277280. Its totient is φ = 6800133952680.

The previous prime is 11220221022019. The next prime is 11220221022029. The reversal of 11220221022021 is 12022012202211.

It is a happy number.

11220221022021 is a `hidden beast` number, since 1 + 1 + 220 + 221 + 0 + 220 + 2 + 1 = 666.

It is not a de Polignac number, because 11220221022021 - 2¹ = 11220221022019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11220221021985 and 11220221022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220221022029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56667782841 + ... + 56667783038.

It is an arithmetic number, because the mean of its divisors is an integer number (1473362356440).

Almost surely, 2^{11220221022021} is an apocalyptic number.

11220221022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11220221022021 is a deficient number, since it is larger than the sum of its proper divisors (6460127255259).

11220221022021 is a wasteful number, since it uses less digits than its factorization.

11220221022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113335565896 (or 113335565893 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11220221022021 its reverse (12022012202211), we get a palindrome (23242233224232).

The spelling of 11220221022021 in words is "eleven trillion, two hundred twenty billion, two hundred twenty-one million, twenty-two thousand, twenty-one".