12461101243 has 4 divisors (see below), whose sum is σ = 12461897448. Its totient is φ = 12460305040.

The previous prime is 12461101171. The next prime is 12461101267. The reversal of 12461101243 is 34210116421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34210116421 = 13 ⋅2631547417.

It is a cyclic number.

It is not a de Polignac number, because 12461101243 - 2²⁵ = 12427546811 is a prime.

It is a super-2 number, since 2×12461101243² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12461101043) 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, 374146 + ... + 406087.

It is an arithmetic number, because the mean of its divisors is an integer number (3115474362).

Almost surely, 2^12461101243 is an apocalyptic number.

12461101243 is a deficient number, since it is larger than the sum of its proper divisors (796205).

12461101243 is an equidigital number, since it uses as much as digits as its factorization.

12461101243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796204.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 12461101243 its reverse (34210116421), we get a palindrome (46671217664).

The spelling of 12461101243 in words is "twelve billion, four hundred sixty-one million, one hundred one thousand, two hundred forty-three".