12195772772 has 24 divisors (see below), whose sum is σ = 21547443456. Its totient is φ = 6039639648.

The previous prime is 12195772741. The next prime is 12195772777. The reversal of 12195772772 is 27727759121.

It is a super-3 number, since 3×12195772772³ (a number of 31 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12195772772.

It is not an unprimeable number, because it can be changed into a prime (12195772777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141023 + ... + 210425.

It is an arithmetic number, because the mean of its divisors is an integer number (897810144).

Almost surely, 2^12195772772 is an apocalyptic number.

It is an amenable number.

12195772772 is a deficient number, since it is larger than the sum of its proper divisors (9351670684).

12195772772 is a wasteful number, since it uses less digits than its factorization.

12195772772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69827 (or 69825 counting only the distinct ones).

The product of its digits is 864360, while the sum is 50.

The spelling of 12195772772 in words is "twelve billion, one hundred ninety-five million, seven hundred seventy-two thousand, seven hundred seventy-two".