211223132321 has 8 divisors (see below), whose sum is σ = 212563451520. Its totient is φ = 209884594608.

The previous prime is 211223132311. The next prime is 211223132333. The reversal of 211223132321 is 123231322112.

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 211223132321 - 2¹⁴ = 211223115937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211223132311) 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 7 ways as a sum of consecutive naturals, for example, 207086 + ... + 682151.

It is an arithmetic number, because the mean of its divisors is an integer number (26570431440).

Almost surely, 2^211223132321 is an apocalyptic number.

It is an amenable number.

211223132321 is a deficient number, since it is larger than the sum of its proper divisors (1340319199).

211223132321 is a wasteful number, since it uses less digits than its factorization.

211223132321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890743.

The product of its digits is 864, while the sum is 23.

Adding to 211223132321 its reverse (123231322112), we get a palindrome (334454454433).

The spelling of 211223132321 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred thirty-two thousand, three hundred twenty-one".