12125206345 has 32 divisors (see below), whose sum is σ = 17574036480. Its totient is φ = 7845336000.

The previous prime is 12125206333. The next prime is 12125206351. The reversal of 12125206345 is 54360252121.

It is not a de Polignac number, because 12125206345 - 2¹⁷ = 12125075273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130594 + ... + 203236.

It is an arithmetic number, because the mean of its divisors is an integer number (549188640).

Almost surely, 2^12125206345 is an apocalyptic number.

It is an amenable number.

12125206345 is a deficient number, since it is larger than the sum of its proper divisors (5448830135).

12125206345 is a wasteful number, since it uses less digits than its factorization.

12125206345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72925.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 12125206345 its reverse (54360252121), we get a palindrome (66485458466).

The spelling of 12125206345 in words is "twelve billion, one hundred twenty-five million, two hundred six thousand, three hundred forty-five".