212232020321 has 4 divisors (see below), whose sum is σ = 212310308544. Its totient is φ = 212153732100.

The previous prime is 212232020281. The next prime is 212232020323. The reversal of 212232020321 is 123020232212.

It is a happy number.

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 212232020321 - 2⁶ = 212232020257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212232020293 and 212232020302.

It is not an unprimeable number, because it can be changed into a prime (212232020323) 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, 39140045 + ... + 39145466.

It is an arithmetic number, because the mean of its divisors is an integer number (53077577136).

Almost surely, 2^212232020321 is an apocalyptic number.

It is an amenable number.

212232020321 is a deficient number, since it is larger than the sum of its proper divisors (78288223).

212232020321 is an equidigital number, since it uses as much as digits as its factorization.

212232020321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78288222.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 212232020321 its reverse (123020232212), we get a palindrome (335252252533).

The spelling of 212232020321 in words is "two hundred twelve billion, two hundred thirty-two million, twenty thousand, three hundred twenty-one".