2178448822012 has 12 divisors (see below), whose sum is σ = 3812316764256. Its totient is φ = 1089215460800.

The previous prime is 2178448822009. The next prime is 2178448822019. The reversal of 2178448822012 is 2102288448712.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178448822019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1674148 + ... + 2675755.

It is an arithmetic number, because the mean of its divisors is an integer number (317693063688).

Almost surely, 2^{2178448822012} is an apocalyptic number.

It is an amenable number.

2178448822012 is a deficient number, since it is larger than the sum of its proper divisors (1633867942244).

2178448822012 is a wasteful number, since it uses less digits than its factorization.

2178448822012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475108 (or 4475106 counting only the distinct ones).

The product of its (nonzero) digits is 917504, while the sum is 49.

The spelling of 2178448822012 in words is "two trillion, one hundred seventy-eight billion, four hundred forty-eight million, eight hundred twenty-two thousand, twelve".