212333221321 has 16 divisors (see below), whose sum is σ = 231983982720. Its totient is φ = 193158685440.

The previous prime is 212333221253. The next prime is 212333221363. The reversal of 212333221321 is 123122333212.

It is a cyclic number.

It is not a de Polignac number, because 212333221321 - 2⁷ = 212333221193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212333221021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2222881 + ... + 2316433.

It is an arithmetic number, because the mean of its divisors is an integer number (14498998920).

Almost surely, 2^212333221321 is an apocalyptic number.

It is an amenable number.

212333221321 is a deficient number, since it is larger than the sum of its proper divisors (19650761399).

212333221321 is a wasteful number, since it uses less digits than its factorization.

212333221321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96096.

The product of its digits is 2592, while the sum is 25.

Adding to 212333221321 its reverse (123122333212), we get a palindrome (335455554533).

The spelling of 212333221321 in words is "two hundred twelve billion, three hundred thirty-three million, two hundred twenty-one thousand, three hundred twenty-one".