12820001192 has 8 divisors (see below), whose sum is σ = 24037502250. Its totient is φ = 6410000592.

The previous prime is 12820001179. The next prime is 12820001197. The reversal of 12820001192 is 29110002821.

It can be written as a sum of positive squares in only one way, i.e., 12663901156 + 156100036 = 112534^2 + 12494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12820001197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801250067 + ... + 801250082.

Almost surely, 2^12820001192 is an apocalyptic number.

It is an amenable number.

12820001192 is a deficient number, since it is larger than the sum of its proper divisors (11217501058).

12820001192 is a wasteful number, since it uses less digits than its factorization.

12820001192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1602500155 (or 1602500151 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 12820001192 in words is "twelve billion, eight hundred twenty million, one thousand, one hundred ninety-two".