212222323231 has 8 divisors (see below), whose sum is σ = 212482402160. Its totient is φ = 211962344832.

The previous prime is 212222323193. The next prime is 212222323237. The reversal of 212222323231 is 132323222212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222323231 is a prime.

It is a super-2 number, since 2×212222323231² (a number of 23 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 = 212222323196 and 212222323205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222323237) 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, 4743241 + ... + 4787773.

It is an arithmetic number, because the mean of its divisors is an integer number (26560300270).

Almost surely, 2^212222323231 is an apocalyptic number.

212222323231 is a deficient number, since it is larger than the sum of its proper divisors (260078929).

212222323231 is a wasteful number, since it uses less digits than its factorization.

212222323231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50265.

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

Adding to 212222323231 its reverse (132323222212), we get a palindrome (344545545443).

The spelling of 212222323231 in words is "two hundred twelve billion, two hundred twenty-two million, three hundred twenty-three thousand, two hundred thirty-one".