211221003011323 has 16 divisors (see below), whose sum is σ = 225042096254976. Its totient is φ = 197558179850880.

The previous prime is 211221003011321. The next prime is 211221003011339. The reversal of 211221003011323 is 323110300122112.

It is a cyclic number.

It is not a de Polignac number, because 211221003011323 - 2¹ = 211221003011321 is a prime.

It is a super-2 number, since 2×211221003011323² (a number of 29 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 = 211221003011294 and 211221003011303.

It is not an unprimeable number, because it can be changed into a prime (211221003011321) 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, 46623811 + ... + 50953132.

It is an arithmetic number, because the mean of its divisors is an integer number (14065131015936).

Almost surely, 2^{211221003011323} is an apocalyptic number.

211221003011323 is a deficient number, since it is larger than the sum of its proper divisors (13821093243653).

211221003011323 is a wasteful number, since it uses less digits than its factorization.

211221003011323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97577754.

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

Adding to 211221003011323 its reverse (323110300122112), we get a palindrome (534331303133435).

The spelling of 211221003011323 in words is "two hundred eleven trillion, two hundred twenty-one billion, three million, eleven thousand, three hundred twenty-three".