212321232023321 has 4 divisors (see below), whose sum is σ = 212875595553792. Its totient is φ = 211766868492852.

The previous prime is 212321232023293. The next prime is 212321232023323. The reversal of 212321232023321 is 123320232123212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212321232023321 - 2²² = 212321227829017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212321232023323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277181764661 + ... + 277181765426.

It is an arithmetic number, because the mean of its divisors is an integer number (53218898888448).

Almost surely, 2^{212321232023321} is an apocalyptic number.

It is an amenable number.

212321232023321 is a deficient number, since it is larger than the sum of its proper divisors (554363530471).

212321232023321 is an equidigital number, since it uses as much as digits as its factorization.

212321232023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554363530470.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 212321232023321 its reverse (123320232123212), we get a palindrome (335641464146533).

The spelling of 212321232023321 in words is "two hundred twelve trillion, three hundred twenty-one billion, two hundred thirty-two million, twenty-three thousand, three hundred twenty-one".