212223123331 has 4 divisors (see below), whose sum is σ = 212224769064. Its totient is φ = 212221477600.

The previous prime is 212223123289. The next prime is 212223123361. The reversal of 212223123331 is 133321322212.

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 212223123331 - 2²⁷ = 212088905603 is a prime.

It is a super-2 number, since 2×212223123331² (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 = 212223123296 and 212223123305.

It is not an unprimeable number, because it can be changed into a prime (212223123361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 611305 + ... + 893386.

It is an arithmetic number, because the mean of its divisors is an integer number (53056192266).

Almost surely, 2^212223123331 is an apocalyptic number.

212223123331 is a deficient number, since it is larger than the sum of its proper divisors (1645733).

212223123331 is a wasteful number, since it uses less digits than its factorization.

212223123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645732.

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

Adding to 212223123331 its reverse (133321322212), we get a palindrome (345544445543).

The spelling of 212223123331 in words is "two hundred twelve billion, two hundred twenty-three million, one hundred twenty-three thousand, three hundred thirty-one".