2171193921712 has 20 divisors (see below), whose sum is σ = 4207144716576. Its totient is φ = 1085479156160.

The previous prime is 2171193921679. The next prime is 2171193921713. The reversal of 2171193921712 is 2171293911712.

It is not an unprimeable number, because it can be changed into a prime (2171193921713) 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 3 ways as a sum of consecutive naturals, for example, 7210648 + ... + 7505719.

Almost surely, 2^{2171193921712} is an apocalyptic number.

It is an amenable number.

2171193921712 is a deficient number, since it is larger than the sum of its proper divisors (2035950794864).

2171193921712 is a wasteful number, since it uses less digits than its factorization.

2171193921712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14725596 (or 14725590 counting only the distinct ones).

The product of its digits is 95256, while the sum is 46.

The spelling of 2171193921712 in words is "two trillion, one hundred seventy-one billion, one hundred ninety-three million, nine hundred twenty-one thousand, seven hundred twelve".