1210123111223 has 4 divisors (see below), whose sum is σ = 1303209504408. Its totient is φ = 1117036718040.

The previous prime is 1210123111201. The next prime is 1210123111297. The reversal of 1210123111223 is 3221113210121.

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 1210123111223 - 2¹⁴ = 1210123094839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210123111195 and 1210123111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210123111523) 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, 46543196573 + ... + 46543196598.

It is an arithmetic number, because the mean of its divisors is an integer number (325802376102).

Almost surely, 2^{1210123111223} is an apocalyptic number.

1210123111223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1210123111223 is a deficient number, since it is larger than the sum of its proper divisors (93086393185).

1210123111223 is an equidigital number, since it uses as much as digits as its factorization.

1210123111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93086393184.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1210123111223 its reverse (3221113210121), we get a palindrome (4431236321344).

The spelling of 1210123111223 in words is "one trillion, two hundred ten billion, one hundred twenty-three million, one hundred eleven thousand, two hundred twenty-three".