12123202123403 has 16 divisors (see below), whose sum is σ = 13914072560640. Its totient is φ = 10347084127296.

The previous prime is 12123202123387. The next prime is 12123202123423. The reversal of 12123202123403 is 30432120232121.

It is not a de Polignac number, because 12123202123403 - 2⁴ = 12123202123387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12123202123423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23344175 + ... + 23857847.

It is an arithmetic number, because the mean of its divisors is an integer number (869629535040).

Almost surely, 2^{12123202123403} is an apocalyptic number.

12123202123403 is a deficient number, since it is larger than the sum of its proper divisors (1790870437237).

12123202123403 is a wasteful number, since it uses less digits than its factorization.

12123202123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528026.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 12123202123403 its reverse (30432120232121), we get a palindrome (42555322355524).

The spelling of 12123202123403 in words is "twelve trillion, one hundred twenty-three billion, two hundred two million, one hundred twenty-three thousand, four hundred three".