1230202023123 has 4 divisors (see below), whose sum is σ = 1640269364168. Its totient is φ = 820134682080.

The previous prime is 1230202023077. The next prime is 1230202023139. The reversal of 1230202023123 is 3213202020321.

It is a happy number.

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

It is not a de Polignac number, because 1230202023123 - 2¹⁴ = 1230202006739 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 1230202023123.

It is not an unprimeable number, because it can be changed into a prime (1230202023023) 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, 205033670518 + ... + 205033670523.

It is an arithmetic number, because the mean of its divisors is an integer number (410067341042).

Almost surely, 2^{1230202023123} is an apocalyptic number.

1230202023123 is a deficient number, since it is larger than the sum of its proper divisors (410067341045).

1230202023123 is an equidigital number, since it uses as much as digits as its factorization.

1230202023123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410067341044.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 1230202023123 its reverse (3213202020321), we get a palindrome (4443404043444).

The spelling of 1230202023123 in words is "one trillion, two hundred thirty billion, two hundred two million, twenty-three thousand, one hundred twenty-three".