1223000023123 has 4 divisors (see below), whose sum is σ = 1256054077840. Its totient is φ = 1189945968408.

The previous prime is 1223000023067. The next prime is 1223000023153. The reversal of 1223000023123 is 3213200003221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223000023123 is a prime.

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 1223000023123.

It is not an unprimeable number, because it can be changed into a prime (1223000023153) 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, 16527027303 + ... + 16527027376.

It is an arithmetic number, because the mean of its divisors is an integer number (314013519460).

Almost surely, 2^{1223000023123} is an apocalyptic number.

1223000023123 is a deficient number, since it is larger than the sum of its proper divisors (33054054717).

1223000023123 is an equidigital number, since it uses as much as digits as its factorization.

1223000023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33054054716.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 1223000023123 its reverse (3213200003221), we get a palindrome (4436200026344).

The spelling of 1223000023123 in words is "one trillion, two hundred twenty-three billion, twenty-three thousand, one hundred twenty-three".