223123212404123 has 4 divisors (see below), whose sum is σ = 223495705246800. Its totient is φ = 222750719561448.

The previous prime is 223123212404041. The next prime is 223123212404201. The reversal of 223123212404123 is 321404212321322.

It is a happy number.

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 223123212404123 - 2³⁰ = 223122138662299 is a prime.

It is a super-3 number, since 3×223123212404123³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 223123212404123.

It is not an unprimeable number, because it can be changed into a prime (223123212404023) 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, 186246420440 + ... + 186246421637.

It is an arithmetic number, because the mean of its divisors is an integer number (55873926311700).

Almost surely, 2^{223123212404123} is an apocalyptic number.

223123212404123 is a deficient number, since it is larger than the sum of its proper divisors (372492842677).

223123212404123 is an equidigital number, since it uses as much as digits as its factorization.

223123212404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372492842676.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 223123212404123 its reverse (321404212321322), we get a palindrome (544527424725445).

The spelling of 223123212404123 in words is "two hundred twenty-three trillion, one hundred twenty-three billion, two hundred twelve million, four hundred four thousand, one hundred twenty-three".