212320111321 has 8 divisors (see below), whose sum is σ = 232561582920. Its totient is φ = 192939979008.

The previous prime is 212320111307. The next prime is 212320111331. The reversal of 212320111321 is 123111023212.

It can be written as a sum of positive squares in 4 ways, for example, as 87897425625 + 124422685696 = 296475^2 + 352736^2 .

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 212320111321 - 2⁷ = 212320111193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212320111331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215334306 + ... + 215335291.

It is an arithmetic number, because the mean of its divisors is an integer number (29070197865).

Almost surely, 2^212320111321 is an apocalyptic number.

It is an amenable number.

212320111321 is a deficient number, since it is larger than the sum of its proper divisors (20241471599).

212320111321 is a wasteful number, since it uses less digits than its factorization.

212320111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430669643.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 212320111321 its reverse (123111023212), we get a palindrome (335431134533).

The spelling of 212320111321 in words is "two hundred twelve billion, three hundred twenty million, one hundred eleven thousand, three hundred twenty-one".