212232223231 has 8 divisors (see below), whose sum is σ = 242694392864. Its totient is φ = 181805873760.

The previous prime is 212232223223. The next prime is 212232223289. The reversal of 212232223231 is 132322232212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212232223231 - 2³ = 212232223223 is a prime.

It is a super-2 number, since 2×212232223231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212232223196 and 212232223205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212232223201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8942340 + ... + 8966041.

It is an arithmetic number, because the mean of its divisors is an integer number (30336799108).

Almost surely, 2^212232223231 is an apocalyptic number.

212232223231 is a deficient number, since it is larger than the sum of its proper divisors (30462169633).

212232223231 is a wasteful number, since it uses less digits than its factorization.

212232223231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17910081.

The product of its digits is 3456, while the sum is 25.

Adding to 212232223231 its reverse (132322232212), we get a palindrome (344554455443).

The spelling of 212232223231 in words is "two hundred twelve billion, two hundred thirty-two million, two hundred twenty-three thousand, two hundred thirty-one".