12211200222021 has 48 divisors (see below), whose sum is σ = 19186548711408. Its totient is φ = 7452580608000.

The previous prime is 12211200222019. The next prime is 12211200222043. The reversal of 12211200222021 is 12022200211221.

It is a happy number.

12211200222021 is a `hidden beast` number, since 1 + 221 + 1 + 200 + 2 + 220 + 21 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 152423091396 + 12058777130625 = 390414^2 + 3472575^2 .

It is not a de Polignac number, because 12211200222021 - 2¹ = 12211200222019 is a prime.

It is a super-2 number, since 2×12211200222021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12211200221985 and 12211200222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211200222061) 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 47 ways as a sum of consecutive naturals, for example, 18360231 + ... + 19013691.

It is an arithmetic number, because the mean of its divisors is an integer number (399719764821).

Almost surely, 2^{12211200222021} is an apocalyptic number.

It is an amenable number.

12211200222021 is a deficient number, since it is larger than the sum of its proper divisors (6975348489387).

12211200222021 is a wasteful number, since it uses less digits than its factorization.

12211200222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656822 (or 656819 counting only the distinct ones).

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

Adding to 12211200222021 its reverse (12022200211221), we get a palindrome (24233400433242).

The spelling of 12211200222021 in words is "twelve trillion, two hundred eleven billion, two hundred million, two hundred twenty-two thousand, twenty-one".