222403123213 has 4 divisors (see below), whose sum is σ = 223022630880. Its totient is φ = 221783615548.

The previous prime is 222403123147. The next prime is 222403123219. The reversal of 222403123213 is 312321304222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222403123213 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 (222403123219) 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, 309753295 + ... + 309754012.

It is an arithmetic number, because the mean of its divisors is an integer number (55755657720).

Almost surely, 2^222403123213 is an apocalyptic number.

It is an amenable number.

222403123213 is a deficient number, since it is larger than the sum of its proper divisors (619507667).

222403123213 is an equidigital number, since it uses as much as digits as its factorization.

222403123213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619507666.

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

Adding to 222403123213 its reverse (312321304222), we get a palindrome (534724427435).

The spelling of 222403123213 in words is "two hundred twenty-two billion, four hundred three million, one hundred twenty-three thousand, two hundred thirteen".