212333321212321 has 4 divisors (see below), whose sum is σ = 219182783186944. Its totient is φ = 205483859237700.

The previous prime is 212333321212261. The next prime is 212333321212343. The reversal of 212333321212321 is 123212123333212.

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 212333321212321 - 2⁷ = 212333321212193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 6849461974591 = 212333321212321 / (2 + 1 + 2 + 3 + 3 + 3 + 3 + 2 + 1 + 2 + 1 + 2 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212333321212921) 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, 3424730987265 + ... + 3424730987326.

It is an arithmetic number, because the mean of its divisors is an integer number (54795695796736).

Almost surely, 2^{212333321212321} is an apocalyptic number.

It is an amenable number.

212333321212321 is a deficient number, since it is larger than the sum of its proper divisors (6849461974623).

212333321212321 is an equidigital number, since it uses as much as digits as its factorization.

212333321212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6849461974622.

The product of its digits is 15552, while the sum is 31.

Adding to 212333321212321 its reverse (123212123333212), we get a palindrome (335545444545533).

The spelling of 212333321212321 in words is "two hundred twelve trillion, three hundred thirty-three billion, three hundred twenty-one million, two hundred twelve thousand, three hundred twenty-one".