12125443311 has 20 divisors (see below), whose sum is σ = 18228707112. Its totient is φ = 8032132368.

The previous prime is 12125443277. The next prime is 12125443321. The reversal of 12125443311 is 11334452121.

12125443311 is a `hidden beast` number, since 1 + 212 + 5 + 4 + 433 + 11 = 666.

It is not a de Polignac number, because 12125443311 - 2¹⁷ = 12125312239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12125443321) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 464025 + ... + 489458.

Almost surely, 2^12125443311 is an apocalyptic number.

12125443311 is a deficient number, since it is larger than the sum of its proper divisors (6103263801).

12125443311 is an equidigital number, since it uses as much as digits as its factorization.

12125443311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953652 (or 953643 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 12125443311 its reverse (11334452121), we get a palindrome (23459895432).

The spelling of 12125443311 in words is "twelve billion, one hundred twenty-five million, four hundred forty-three thousand, three hundred eleven".