12400661134201 has 8 divisors (see below), whose sum is σ = 13132638361800. Its totient is φ = 11668964636928.

The previous prime is 12400661134157. The next prime is 12400661134217. The reversal of 12400661134201 is 10243116600421.

It can be written as a sum of positive squares in 4 ways, for example, as 414801690601 + 11985859443600 = 644051^2 + 3462060^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12400661134201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12400665134201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70091626 + ... + 70268323.

It is an arithmetic number, because the mean of its divisors is an integer number (1641579795225).

Almost surely, 2^{12400661134201} is an apocalyptic number.

It is an amenable number.

12400661134201 is a deficient number, since it is larger than the sum of its proper divisors (731977227599).

12400661134201 is a wasteful number, since it uses less digits than its factorization.

12400661134201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140365163.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 12400661134201 its reverse (10243116600421), we get a palindrome (22643777734622).

The spelling of 12400661134201 in words is "twelve trillion, four hundred billion, six hundred sixty-one million, one hundred thirty-four thousand, two hundred one".