12400402123203 has 8 divisors (see below), whose sum is σ = 16533885943488. Its totient is φ = 8266926525864.

The previous prime is 12400402123063. The next prime is 12400402123211. The reversal of 12400402123203 is 30232120400421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12400402123203 - 2²¹ = 12400400026051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12400402124203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4074400 + ... + 6434402.

It is an arithmetic number, because the mean of its divisors is an integer number (2066735742936).

Almost surely, 2^{12400402123203} is an apocalyptic number.

12400402123203 is a deficient number, since it is larger than the sum of its proper divisors (4133483820285).

12400402123203 is a wasteful number, since it uses less digits than its factorization.

12400402123203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4111473.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12400402123203 its reverse (30232120400421), we get a palindrome (42632522523624).

The spelling of 12400402123203 in words is "twelve trillion, four hundred billion, four hundred two million, one hundred twenty-three thousand, two hundred three".