12400210001 has 4 divisors (see below), whose sum is σ = 12400552500. Its totient is φ = 12399867504.

The previous prime is 12400209979. The next prime is 12400210003. The reversal of 12400210001 is 10001200421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4980971776 + 7419238225 = 70576^2 + 86135^2 .

It is a cyclic number.

It is not a de Polignac number, because 12400210001 - 2⁶ = 12400209937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12400210003) 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, 109526 + ... + 191823.

It is an arithmetic number, because the mean of its divisors is an integer number (3100138125).

Almost surely, 2^12400210001 is an apocalyptic number.

It is an amenable number.

12400210001 is a deficient number, since it is larger than the sum of its proper divisors (342499).

12400210001 is an equidigital number, since it uses as much as digits as its factorization.

12400210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342498.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12400210001 its reverse (10001200421), we get a palindrome (22401410422).

The spelling of 12400210001 in words is "twelve billion, four hundred million, two hundred ten thousand, one".