222232123213 has 4 divisors (see below), whose sum is σ = 222326411580. Its totient is φ = 222137834848.

The previous prime is 222232123207. The next prime is 222232123247. The reversal of 222232123213 is 312321232222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312321232222 = 2 ⋅156160616111.

It can be written as a sum of positive squares in 2 ways, for example, as 63583656964 + 158648466249 = 252158^2 + 398307^2 .

It is a cyclic number.

It is not a de Polignac number, because 222232123213 - 2⁵ = 222232123181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222232123273) 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, 47140648 + ... + 47145361.

It is an arithmetic number, because the mean of its divisors is an integer number (55581602895).

Almost surely, 2^222232123213 is an apocalyptic number.

It is an amenable number.

222232123213 is a deficient number, since it is larger than the sum of its proper divisors (94288367).

222232123213 is an equidigital number, since it uses as much as digits as its factorization.

222232123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94288366.

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

Adding to 222232123213 its reverse (312321232222), we get a palindrome (534553355435).

The spelling of 222232123213 in words is "two hundred twenty-two billion, two hundred thirty-two million, one hundred twenty-three thousand, two hundred thirteen".