223123211213 has 4 divisors (see below), whose sum is σ = 254997955680. Its totient is φ = 191248466748.

The previous prime is 223123211189. The next prime is 223123211329. The reversal of 223123211213 is 312112321322.

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 not a de Polignac number, because 223123211213 - 2¹⁶ = 223123145677 is a prime.

It is a super-3 number, since 3×223123211213³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223123211713) 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, 15937372223 + ... + 15937372236.

It is an arithmetic number, because the mean of its divisors is an integer number (63749488920).

Almost surely, 2^223123211213 is an apocalyptic number.

It is an amenable number.

223123211213 is a deficient number, since it is larger than the sum of its proper divisors (31874744467).

223123211213 is an equidigital number, since it uses as much as digits as its factorization.

223123211213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31874744466.

The product of its digits is 864, while the sum is 23.

Adding to 223123211213 its reverse (312112321322), we get a palindrome (535235532535).

The spelling of 223123211213 in words is "two hundred twenty-three billion, one hundred twenty-three million, two hundred eleven thousand, two hundred thirteen".