123203123001012 has 24 divisors (see below), whose sum is σ = 287474350037056. Its totient is φ = 41067651043008.

The previous prime is 123203123000959. The next prime is 123203123001061. The reversal of 123203123001012 is 210100321302321.

It is a self number, because there is not a number n which added to its sum of digits gives 123203123001012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2507088 + ... + 15896280.

Almost surely, 2^{123203123001012} is an apocalyptic number.

123203123001012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123203123001012 is an abundant number, since it is smaller than the sum of its proper divisors (164271227036044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123203123001012 is a wasteful number, since it uses less digits than its factorization.

123203123001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14156007 (or 14156005 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123203123001012 its reverse (210100321302321), we get a palindrome (333303444303333).

The spelling of 123203123001012 in words is "one hundred twenty-three trillion, two hundred three billion, one hundred twenty-three million, one thousand, twelve".