12125356243 has 32 divisors (see below), whose sum is σ = 16289763840. Its totient is φ = 8716412160.

The previous prime is 12125356237. The next prime is 12125356249. The reversal of 12125356243 is 34265352121.

It is an interprime number because it is at equal distance from previous prime (12125356237) and next prime (12125356249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12125356243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12125356199 and 12125356208.

It is not an unprimeable number, because it can be changed into a prime (12125356249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2819671 + ... + 2823967.

It is an arithmetic number, because the mean of its divisors is an integer number (509055120).

Almost surely, 2^12125356243 is an apocalyptic number.

12125356243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12125356243 is a deficient number, since it is larger than the sum of its proper divisors (4164407597).

12125356243 is a wasteful number, since it uses less digits than its factorization.

12125356243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7147.

The product of its digits is 43200, while the sum is 34.

The spelling of 12125356243 in words is "twelve billion, one hundred twenty-five million, three hundred fifty-six thousand, two hundred forty-three".