23212213331 has 4 divisors (see below), whose sum is σ = 23212627272. Its totient is φ = 23211799392.

The previous prime is 23212213279. The next prime is 23212213337. The reversal of 23212213331 is 13331221232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23212213331 - 2⁶ = 23212213267 is a prime.

It is a super-2 number, since 2×23212213331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23212213297 and 23212213306.

It is not an unprimeable number, because it can be changed into a prime (23212213337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106646 + ... + 240411.

It is an arithmetic number, because the mean of its divisors is an integer number (5803156818).

Almost surely, 2^23212213331 is an apocalyptic number.

23212213331 is a deficient number, since it is larger than the sum of its proper divisors (413941).

23212213331 is an equidigital number, since it uses as much as digits as its factorization.

23212213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413940.

The product of its digits is 1296, while the sum is 23.

Adding to 23212213331 its reverse (13331221232), we get a palindrome (36543434563).

The spelling of 23212213331 in words is "twenty-three billion, two hundred twelve million, two hundred thirteen thousand, three hundred thirty-one".