211021122321 has 80 divisors (see below), whose sum is σ = 337719634560. Its totient is φ = 130913003520.

The previous prime is 211021122259. The next prime is 211021122329. The reversal of 211021122321 is 123221120112.

211021122321 is a `hidden beast` number, since 2 + 110 + 211 + 22 + 321 = 666.

It is not a de Polignac number, because 211021122321 - 2¹¹ = 211021120273 is a prime.

It is a super-2 number, since 2×211021122321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211021122294 and 211021122303.

It is not an unprimeable number, because it can be changed into a prime (211021122329) 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 79 ways as a sum of consecutive naturals, for example, 114249820 + ... + 114251666.

It is an arithmetic number, because the mean of its divisors is an integer number (4221495432).

Almost surely, 2^211021122321 is an apocalyptic number.

It is an amenable number.

211021122321 is a deficient number, since it is larger than the sum of its proper divisors (126698512239).

211021122321 is a wasteful number, since it uses less digits than its factorization.

211021122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3156 (or 3147 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 211021122321 its reverse (123221120112), we get a palindrome (334242242433).

The spelling of 211021122321 in words is "two hundred eleven billion, twenty-one million, one hundred twenty-two thousand, three hundred twenty-one".