12395220134 has 16 divisors (see below), whose sum is σ = 20665789200. Its totient is φ = 5527884960.

The previous prime is 12395220127. The next prime is 12395220137. The reversal of 12395220134 is 43102259321.

It is a self number, because there is not a number n which added to its sum of digits gives 12395220134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12395220137) 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, 5314109 + ... + 5316440.

It is an arithmetic number, because the mean of its divisors is an integer number (1291611825).

Almost surely, 2^12395220134 is an apocalyptic number.

12395220134 is a deficient number, since it is larger than the sum of its proper divisors (8270569066).

12395220134 is a wasteful number, since it uses less digits than its factorization.

12395220134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10630615.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 12395220134 its reverse (43102259321), we get a palindrome (55497479455).

The spelling of 12395220134 in words is "twelve billion, three hundred ninety-five million, two hundred twenty thousand, one hundred thirty-four".