12400403202101 has 4 divisors (see below), whose sum is σ = 12400410321600. Its totient is φ = 12400396082604.

The previous prime is 12400403202091. The next prime is 12400403202113. The reversal of 12400403202101 is 10120230400421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12400403202101 - 2²² = 12400399007797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400403202181) 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, 998420 + ... + 5079138.

It is an arithmetic number, because the mean of its divisors is an integer number (3100102580400).

Almost surely, 2^{12400403202101} is an apocalyptic number.

It is an amenable number.

12400403202101 is a deficient number, since it is larger than the sum of its proper divisors (7119499).

12400403202101 is an equidigital number, since it uses as much as digits as its factorization.

12400403202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7119498.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12400403202101 its reverse (10120230400421), we get a palindrome (22520633602522).

The spelling of 12400403202101 in words is "twelve trillion, four hundred billion, four hundred three million, two hundred two thousand, one hundred one".