12315123129 has 16 divisors (see below), whose sum is σ = 16598736000. Its totient is φ = 8121050496.

The previous prime is 12315123127. The next prime is 12315123131. The reversal of 12315123129 is 92132151321.

It is an interprime number because it is at equal distance from previous prime (12315123127) and next prime (12315123131).

It is not a de Polignac number, because 12315123129 - 2¹ = 12315123127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12315123096 and 12315123105.

It is not an unprimeable number, because it can be changed into a prime (12315123127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164437 + ... + 227309.

It is an arithmetic number, because the mean of its divisors is an integer number (1037421000).

Almost surely, 2^12315123129 is an apocalyptic number.

It is an amenable number.

12315123129 is a deficient number, since it is larger than the sum of its proper divisors (4283612871).

12315123129 is a wasteful number, since it uses less digits than its factorization.

12315123129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63584.

The product of its digits is 3240, while the sum is 30.

The spelling of 12315123129 in words is "twelve billion, three hundred fifteen million, one hundred twenty-three thousand, one hundred twenty-nine".