423443221222213 has 4 divisors (see below), whose sum is σ = 423452728939500. Its totient is φ = 423433713504928.

The previous prime is 423443221222169. The next prime is 423443221222267. The reversal of 423443221222213 is 312222122344324.

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

It can be written as a sum of positive squares in 2 ways, for example, as 419735894326849 + 3707326895364 = 20487457^2 + 1925442^2 .

It is a cyclic number.

It is not a de Polignac number, because 423443221222213 - 2⁹ = 423443221221701 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 (423443221226213) 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, 4753791838 + ... + 4753880911.

It is an arithmetic number, because the mean of its divisors is an integer number (105863182234875).

Almost surely, 2^{423443221222213} is an apocalyptic number.

It is an amenable number.

423443221222213 is a deficient number, since it is larger than the sum of its proper divisors (9507717287).

423443221222213 is an equidigital number, since it uses as much as digits as its factorization.

423443221222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507717286.

The product of its digits is 221184, while the sum is 37.

Adding to 423443221222213 its reverse (312222122344324), we get a palindrome (735665343566537).

The spelling of 423443221222213 in words is "four hundred twenty-three trillion, four hundred forty-three billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred thirteen".