123212131223 has 8 divisors (see below), whose sum is σ = 123949614096. Its totient is φ = 122474939200.

The previous prime is 123212131201. The next prime is 123212131277. The reversal of 123212131223 is 322131212321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123212131223 - 2⁸ = 123212130967 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 (123212161223) 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 7 ways as a sum of consecutive naturals, for example, 808928 + ... + 949098.

It is an arithmetic number, because the mean of its divisors is an integer number (15493701762).

Almost surely, 2^123212131223 is an apocalyptic number.

123212131223 is a deficient number, since it is larger than the sum of its proper divisors (737482873).

123212131223 is a wasteful number, since it uses less digits than its factorization.

123212131223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145425.

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

Adding to 123212131223 its reverse (322131212321), we get a palindrome (445343343544).

The spelling of 123212131223 in words is "one hundred twenty-three billion, two hundred twelve million, one hundred thirty-one thousand, two hundred twenty-three".