222324232421 has 4 divisors (see below), whose sum is σ = 222359233932. Its totient is φ = 222289230912.

The previous prime is 222324232363. The next prime is 222324232439. The reversal of 222324232421 is 124232423222.

It is a happy number.

222324232421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 134385295396 + 87938937025 = 366586^2 + 296545^2 .

It is a cyclic number.

It is not a de Polignac number, because 222324232421 - 2¹⁰ = 222324231397 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 (222324232321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17491226 + ... + 17503931.

It is an arithmetic number, because the mean of its divisors is an integer number (55589808483).

Almost surely, 2^222324232421 is an apocalyptic number.

It is an amenable number.

222324232421 is a deficient number, since it is larger than the sum of its proper divisors (35001511).

222324232421 is an equidigital number, since it uses as much as digits as its factorization.

222324232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35001510.

The product of its digits is 18432, while the sum is 29.

Adding to 222324232421 its reverse (124232423222), we get a palindrome (346556655643).

The spelling of 222324232421 in words is "two hundred twenty-two billion, three hundred twenty-four million, two hundred thirty-two thousand, four hundred twenty-one".